189512984860 has 24 divisors (see below), whose sum is σ = 398011120416. Its totient is φ = 75798745920.

The previous prime is 189512984809. The next prime is 189512984873. The reversal of 189512984860 is 68489215981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158376 + ... + 635695.

It is an arithmetic number, because the mean of its divisors is an integer number (16583796684).

Almost surely, 2^189512984860 is an apocalyptic number.

189512984860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189512984860 is an abundant number, since it is smaller than the sum of its proper divisors (208498135556).

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

189512984860 is a wasteful number, since it uses less digits than its factorization.

189512984860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806013 (or 806011 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 61.

The spelling of 189512984860 in words is "one hundred eighty-nine billion, five hundred twelve million, nine hundred eighty-four thousand, eight hundred sixty".