189611951683 has 18 divisors (see below), whose sum is σ = 242443624668. Its totient is φ = 147749568120.

The previous prime is 189611951623. The next prime is 189611951719. The reversal of 189611951683 is 386159116981.

It is not a de Polignac number, because 189611951683 - 2²⁹ = 189075080771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189611951623) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15984285 + ... + 15996142.

Almost surely, 2^189611951683 is an apocalyptic number.

189611951683 is a deficient number, since it is larger than the sum of its proper divisors (52831672985).

189611951683 is a wasteful number, since it uses less digits than its factorization.

189611951683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980463 (or 31980445 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 58.

The spelling of 189611951683 in words is "one hundred eighty-nine billion, six hundred eleven million, nine hundred fifty-one thousand, six hundred eighty-three".