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18983524475 = 521096966431
BaseRepresentation
bin10001101011100000…
…011001100001111011
31210222222211221222002
4101223200121201323
5302334240240400
612415414451215
71241300203256
oct215340314173
953888757862
1018983524475
118061782a03
123819663b0b
131a36c1c626
14cc12ca09d
157618d2ed5
hex46b81987b

18983524475 has 12 divisors (see below), whose sum is σ = 23755533120. Its totient is φ = 15047488800.

The previous prime is 18983524457. The next prime is 18983524477. The reversal of 18983524475 is 57442538981.

It is not a de Polignac number, because 18983524475 - 210 = 18983523451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18983524475.

It is not an unprimeable number, because it can be changed into a prime (18983524477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3480491 + ... + 3485940.

It is an arithmetic number, because the mean of its divisors is an integer number (1979627760).

Almost surely, 218983524475 is an apocalyptic number.

18983524475 is a deficient number, since it is larger than the sum of its proper divisors (4772008645).

18983524475 is a wasteful number, since it uses less digits than its factorization.

18983524475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966550 (or 6966545 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The spelling of 18983524475 in words is "eighteen billion, nine hundred eighty-three million, five hundred twenty-four thousand, four hundred seventy-five".

Divisors: 1 5 25 109 545 2725 6966431 34832155 174160775 759340979 3796704895 18983524475