189512914488 has 32 divisors (see below), whose sum is σ = 474358012800. Its totient is φ = 63094207968.

The previous prime is 189512914453. The next prime is 189512914519. The reversal of 189512914488 is 884419215981.

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, 4777558 + ... + 4817061.

It is an arithmetic number, because the mean of its divisors is an integer number (14823687900).

Almost surely, 2^189512914488 is an apocalyptic number.

It is an amenable number.

189512914488 is an abundant number, since it is smaller than the sum of its proper divisors (284845098312).

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

189512914488 is a wasteful number, since it uses less digits than its factorization.

189512914488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9595451 (or 9595447 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 60.

The spelling of 189512914488 in words is "one hundred eighty-nine billion, five hundred twelve million, nine hundred fourteen thousand, four hundred eighty-eight".