18850782072 has 32 divisors (see below), whose sum is σ = 48752024400. Its totient is φ = 6066918144.

The previous prime is 18850782059. The next prime is 18850782109. The reversal of 18850782072 is 27028705881.

It is a super-2 number, since 2×18850782072² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13541533 + ... + 13542924.

Almost surely, 2^18850782072 is an apocalyptic number.

18850782072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18850782072 is an abundant number, since it is smaller than the sum of its proper divisors (29901242328).

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

18850782072 is a wasteful number, since it uses less digits than its factorization.

18850782072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27084495 (or 27084491 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 48.

The spelling of 18850782072 in words is "eighteen billion, eight hundred fifty million, seven hundred eighty-two thousand, seventy-two".