18692472959 has 4 divisors (see below), whose sum is σ = 18724869504. Its totient is φ = 18660076416.

The previous prime is 18692472949. The next prime is 18692472971. The reversal of 18692472959 is 95927429681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95927429681 = 306847 ⋅312623.

It is a cyclic number.

It is not a de Polignac number, because 18692472959 - 2⁸ = 18692472703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18692472949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16197407 + ... + 16198560.

It is an arithmetic number, because the mean of its divisors is an integer number (4681217376).

Almost surely, 2^18692472959 is an apocalyptic number.

18692472959 is a deficient number, since it is larger than the sum of its proper divisors (32396545).

18692472959 is an equidigital number, since it uses as much as digits as its factorization.

18692472959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32396544.

The product of its digits is 19595520, while the sum is 62.

The spelling of 18692472959 in words is "eighteen billion, six hundred ninety-two million, four hundred seventy-two thousand, nine hundred fifty-nine".