18934627959 has 20 divisors (see below), whose sum is σ = 30460837176. Its totient is φ = 11652078096.

The previous prime is 18934627891. The next prime is 18934627967. The reversal of 18934627959 is 95972643981.

18934627959 is a `hidden beast` number, since 1 + 89 + 3 + 462 + 7 + 95 + 9 = 666.

It is not a de Polignac number, because 18934627959 - 2⁸ = 18934627703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18934627896 and 18934627905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934620959) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8989749 + ... + 8991854.

Almost surely, 2^18934627959 is an apocalyptic number.

18934627959 is a deficient number, since it is larger than the sum of its proper divisors (11526209217).

18934627959 is a wasteful number, since it uses less digits than its factorization.

18934627959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17981628 (or 17981619 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 18934627959 in words is "eighteen billion, nine hundred thirty-four million, six hundred twenty-seven thousand, nine hundred fifty-nine".