189901894192 has 10 divisors (see below), whose sum is σ = 367934920028. Its totient is φ = 94950947088.

The previous prime is 189901894159. The next prime is 189901894211. The reversal of 189901894192 is 291498109981.

It is a self number, because there is not a number n which added to its sum of digits gives 189901894192.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934434178 + ... + 5934434209.

Almost surely, 2^189901894192 is an apocalyptic number.

It is an amenable number.

189901894192 is a deficient number, since it is larger than the sum of its proper divisors (178033025836).

189901894192 is a wasteful number, since it uses less digits than its factorization.

189901894192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868868395 (or 11868868389 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 61.

The spelling of 189901894192 in words is "one hundred eighty-nine billion, nine hundred one million, eight hundred ninety-four thousand, one hundred ninety-two".