189286195880 has 16 divisors (see below), whose sum is σ = 425893940820. Its totient is φ = 75714478336.

The previous prime is 189286195841. The next prime is 189286195907. The reversal of 189286195880 is 88591682981.

It can be written as a sum of positive squares in 2 ways, for example, as 177785349316 + 11500846564 = 421646^2 + 107242^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2366077409 + ... + 2366077488.

Almost surely, 2^189286195880 is an apocalyptic number.

189286195880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189286195880 is an abundant number, since it is smaller than the sum of its proper divisors (236607744940).

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

189286195880 is a wasteful number, since it uses less digits than its factorization.

189286195880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732154908 (or 4732154904 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 65.

The spelling of 189286195880 in words is "one hundred eighty-nine billion, two hundred eighty-six million, one hundred ninety-five thousand, eight hundred eighty".