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18993230106750 = 232538441435603
BaseRepresentation
bin1000101000110001101001…
…01110111101000001111110
32111020201211212021212111200
410110120310232331001332
54442141113401404000
6104221211445200330
74000133643102504
oct424306456750176
974221755255450
1018993230106750
116062a90274149
1221690224000a6
13a7a0915ab003
144993c4a76674
1522e0ce10a500
hex114634bbd07e

18993230106750 has 48 divisors (see below), whose sum is σ = 51357694214736. Its totient is φ = 5064861361200.

The previous prime is 18993230106731. The next prime is 18993230106757. The reversal of 18993230106750 is 5760103239981.

18993230106750 is a `hidden beast` number, since 189 + 93 + 2 + 301 + 0 + 6 + 75 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18993230106757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4220715552 + ... + 4220720051.

It is an arithmetic number, because the mean of its divisors is an integer number (1069951962807).

Almost surely, 218993230106750 is an apocalyptic number.

18993230106750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18993230106750 is an abundant number, since it is smaller than the sum of its proper divisors (32364464107986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18993230106750 is a wasteful number, since it uses less digits than its factorization.

18993230106750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8441435626 (or 8441435613 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 18993230106750 in words is "eighteen trillion, nine hundred ninety-three billion, two hundred thirty million, one hundred six thousand, seven hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 30 45 50 75 90 125 150 225 250 375 450 750 1125 2250 8441435603 16882871206 25324306809 42207178015 50648613618 75972920427 84414356030 126621534045 151945840854 211035890075 253243068090 379864602135 422071780150 633107670225 759729204270 1055179450375 1266215340450 1899323010675 2110358900750 3165538351125 3798646021350 6331076702250 9496615053375 18993230106750