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18073291470 = 2351346341773
BaseRepresentation
bin10000110101010000…
…001000101011001110
31201122120002100000120
4100311100020223032
5244003230311340
612145221205410
71206605304603
oct206520105316
951576070016
1018073291470
1177349a1423
123604860866
131920482310
14c364686aa
1570ba344d0
hex435408ace

18073291470 has 32 divisors (see below), whose sum is σ = 46712508192. Its totient is φ = 4448810112.

The previous prime is 18073291441. The next prime is 18073291501. The reversal of 18073291470 is 7419237081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23170497 + ... + 23171276.

It is an arithmetic number, because the mean of its divisors is an integer number (1459765881).

Almost surely, 218073291470 is an apocalyptic number.

18073291470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18073291470 is an abundant number, since it is smaller than the sum of its proper divisors (28639216722).

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

18073291470 is a wasteful number, since it uses less digits than its factorization.

18073291470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46341796.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 18073291470 in words is "eighteen billion, seventy-three million, two hundred ninety-one thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 46341773 92683546 139025319 231708865 278050638 463417730 602443049 695126595 1204886098 1390253190 1807329147 3012215245 3614658294 6024430490 9036645735 18073291470