18769999056 has 40 divisors (see below), whose sum is σ = 48595324224. Its totient is φ = 6242968320.

The previous prime is 18769999049. The next prime is 18769999057. The reversal of 18769999056 is 65099996781.

It is a super-2 number, since 2×18769999056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18769999057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405900 + ... + 449771.

Almost surely, 2^18769999056 is an apocalyptic number.

18769999056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18769999056 is an abundant number, since it is smaller than the sum of its proper divisors (29825325168).

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

18769999056 is a wasteful number, since it uses less digits than its factorization.

18769999056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856139 (or 856133 counting only the distinct ones).

The product of its (nonzero) digits is 66134880, while the sum is 69.

The spelling of 18769999056 in words is "eighteen billion, seven hundred sixty-nine million, nine hundred ninety-nine thousand, fifty-six".