18472791850 has 12 divisors (see below), whose sum is σ = 34359392934. Its totient is φ = 7389116720.

The previous prime is 18472791847. The next prime is 18472791863. The reversal of 18472791850 is 5819727481.

It can be written as a sum of positive squares in 3 ways, for example, as 16592788969 + 1880002881 = 128813^2 + 43359^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184727869 + ... + 184727968.

Almost surely, 2^18472791850 is an apocalyptic number.

18472791850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18472791850 is a deficient number, since it is larger than the sum of its proper divisors (15886601084).

18472791850 is a wasteful number, since it uses less digits than its factorization.

18472791850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369455849 (or 369455844 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 18472791850 in words is "eighteen billion, four hundred seventy-two million, seven hundred ninety-one thousand, eight hundred fifty".