18473115850 has 48 divisors (see below), whose sum is σ = 40975913088. Its totient is φ = 6058261440.

The previous prime is 18473115779. The next prime is 18473115937. The reversal of 18473115850 is 5851137481.

It is a junction number, because it is equal to n+sod(n) for n = 18473115797 and 18473115806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1139349 + ... + 1155448.

It is an arithmetic number, because the mean of its divisors is an integer number (853664856).

Almost surely, 2^18473115850 is an apocalyptic number.

18473115850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18473115850 is an abundant number, since it is smaller than the sum of its proper divisors (22502797238).

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

18473115850 is a wasteful number, since it uses less digits than its factorization.

18473115850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294839 (or 2294834 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 18473115850 in words is "eighteen billion, four hundred seventy-three million, one hundred fifteen thousand, eight hundred fifty".