18759685156 has 9 divisors (see below), whose sum is σ = 32829928411. Its totient is φ = 9379705612.

The previous prime is 18759685099. The next prime is 18759685171. The reversal of 18759685156 is 65158695781.

The square root of 18759685156 is 136966.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18759685094 and 18759685103.

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 2 ways as a sum of consecutive naturals, for example, 239691 + ... + 308173.

Almost surely, 2^18759685156 is an apocalyptic number.

18759685156 is the 136966-th square number.

It is an amenable number.

18759685156 is a deficient number, since it is larger than the sum of its proper divisors (14070243255).

18759685156 is an frugal number, since it uses more digits than its factorization.

18759685156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136970 (or 68485 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 61.

The spelling of 18759685156 in words is "eighteen billion, seven hundred fifty-nine million, six hundred eighty-five thousand, one hundred fifty-six".