18252005136 has 20 divisors (see below), whose sum is σ = 47151013392. Its totient is φ = 6084001696.

The previous prime is 18252005087. The next prime is 18252005153. The reversal of 18252005136 is 63150025281.

It is a junction number, because it is equal to n+sod(n) for n = 18252005097 and 18252005106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190125006 + ... + 190125101.

Almost surely, 2^18252005136 is an apocalyptic number.

18252005136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18252005136 is an abundant number, since it is smaller than the sum of its proper divisors (28899008256).

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

18252005136 is a wasteful number, since it uses less digits than its factorization.

18252005136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380250118 (or 380250112 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 18252005136 in words is "eighteen billion, two hundred fifty-two million, five thousand, one hundred thirty-six".