190987031688 has 64 divisors (see below), whose sum is σ = 479354103360. Its totient is φ = 63411204096.

The previous prime is 190987031671. The next prime is 190987031693. The reversal of 190987031688 is 886130789091.

It is a super-2 number, since 2×190987031688² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8124720 + ... + 8148192.

It is an arithmetic number, because the mean of its divisors is an integer number (7489907865).

Almost surely, 2^190987031688 is an apocalyptic number.

It is an amenable number.

190987031688 is an abundant number, since it is smaller than the sum of its proper divisors (288367071672).

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

190987031688 is a wasteful number, since it uses less digits than its factorization.

190987031688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24806 (or 24802 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 190987031688 in words is "one hundred ninety billion, nine hundred eighty-seven million, thirty-one thousand, six hundred eighty-eight".