18657152050 has 12 divisors (see below), whose sum is σ = 34702302906. Its totient is φ = 7462860800.

The previous prime is 18657152047. The next prime is 18657152069. The reversal of 18657152050 is 5025175681.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10867854001 + 7789298049 = 104249^2 + 88257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18657151994 and 18657152012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186571471 + ... + 186571570.

Almost surely, 2^18657152050 is an apocalyptic number.

18657152050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18657152050 is a deficient number, since it is larger than the sum of its proper divisors (16045150856).

18657152050 is a wasteful number, since it uses less digits than its factorization.

18657152050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373143053 (or 373143048 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 18657152050 in words is "eighteen billion, six hundred fifty-seven million, one hundred fifty-two thousand, fifty".