189909180909036 has 72 divisors (see below), whose sum is σ = 505316388777200. Its totient is φ = 59971025203200.

The previous prime is 189909180908969. The next prime is 189909180909059. The reversal of 189909180909036 is 630909081909981.

189909180909036 is a `hidden beast` number, since 189 + 90 + 91 + 80 + 90 + 90 + 36 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169347420 + ... + 170465148.

Almost surely, 2^{189909180909036} is an apocalyptic number.

It is an amenable number.

189909180909036 is an abundant number, since it is smaller than the sum of its proper divisors (315407207868164).

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

189909180909036 is a wasteful number, since it uses less digits than its factorization.

189909180909036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366159 (or 1366154 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 72.

The spelling of 189909180909036 in words is "one hundred eighty-nine trillion, nine hundred nine billion, one hundred eighty million, nine hundred nine thousand, thirty-six".