18725679936 has 84 divisors (see below), whose sum is σ = 54003338272. Its totient is φ = 6203568384.

The previous prime is 18725679901. The next prime is 18725679937. The reversal of 18725679936 is 63997652781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18725679937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5836 + ... + 193611.

Almost surely, 2^18725679936 is an apocalyptic number.

18725679936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18725679936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27001669136).

18725679936 is an abundant number, since it is smaller than the sum of its proper divisors (35277658336).

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

18725679936 is a wasteful number, since it uses less digits than its factorization.

18725679936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199628 (or 199615 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 18725679936 in words is "eighteen billion, seven hundred twenty-five million, six hundred seventy-nine thousand, nine hundred thirty-six".