18215416232 has 48 divisors (see below), whose sum is σ = 38176318080. Its totient is φ = 8135899200.

The previous prime is 18215416211. The next prime is 18215416243. The reversal of 18215416232 is 23261451281.

It is a junction number, because it is equal to n+sod(n) for n = 18215416192 and 18215416201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175394 + ... + 259217.

It is an arithmetic number, because the mean of its divisors is an integer number (795339960).

Almost surely, 2^18215416232 is an apocalyptic number.

It is an amenable number.

18215416232 is an abundant number, since it is smaller than the sum of its proper divisors (19960901848).

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

18215416232 is a wasteful number, since it uses less digits than its factorization.

18215416232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434674 (or 434657 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The spelling of 18215416232 in words is "eighteen billion, two hundred fifteen million, four hundred sixteen thousand, two hundred thirty-two".