18973679525 has 12 divisors (see below), whose sum is σ = 23592909600. Its totient is φ = 15136655280.

The previous prime is 18973679503. The next prime is 18973679537. The reversal of 18973679525 is 52597637981.

It is not a de Polignac number, because 18973679525 - 2¹² = 18973675429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048055 + ... + 1066004.

It is an arithmetic number, because the mean of its divisors is an integer number (1966075800).

Almost surely, 2^18973679525 is an apocalyptic number.

It is an amenable number.

18973679525 is a deficient number, since it is larger than the sum of its proper divisors (4619230075).

18973679525 is a wasteful number, since it uses less digits than its factorization.

18973679525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114428 (or 2114423 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 62.

The spelling of 18973679525 in words is "eighteen billion, nine hundred seventy-three million, six hundred seventy-nine thousand, five hundred twenty-five".