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18954260770732 = 2274223916026371
BaseRepresentation
bin1000100111101001000011…
…11110101110111110101100
32111010000021000121111012021
410103310201332232332230
54441021311224130412
6104151244525115524
73664254152155120
oct423644176567654
974100230544167
1018954260770732
116048503083221
1221615676b8ba4
13a764c0c10bc1
14497569319580
1522d09cd60607
hex113d21faefac

18954260770732 has 24 divisors (see below), whose sum is σ = 37909421383680. Its totient is φ = 8123061792720.

The previous prime is 18954260770651. The next prime is 18954260770771. The reversal of 18954260770732 is 23707706245981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6830494 + ... + 9195877.

It is an arithmetic number, because the mean of its divisors is an integer number (1579559224320).

It is a 2-persistent number, because it is pandigital, and so is 2⋅18954260770732 = 37908521541464, but 3⋅18954260770732 = 56862782312196 is not.

Almost surely, 218954260770732 is an apocalyptic number.

It is an amenable number.

18954260770732 is an abundant number, since it is smaller than the sum of its proper divisors (18955160612948).

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

18954260770732 is a wasteful number, since it uses less digits than its factorization.

18954260770732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16068621 (or 16068619 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 18954260770732 in words is "eighteen trillion, nine hundred fifty-four billion, two hundred sixty million, seven hundred seventy thousand, seven hundred thirty-two".

Divisors: 1 2 4 7 14 28 42239 84478 168956 295673 591346 1182692 16026371 32052742 64105484 112184597 224369194 448738388 676937884669 1353875769338 2707751538676 4738565192683 9477130385366 18954260770732