188874988 has 12 divisors (see below), whose sum is σ = 344902320. Its totient is φ = 90331472.

The previous prime is 188874977. The next prime is 188874997. The reversal of 188874988 is 889478881.

It is a super-2 number, since 2×188874988² = 71347522184000288, which contains 22 as substring.

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, 1026403 + ... + 1026586.

It is an arithmetic number, because the mean of its divisors is an integer number (28741860).

Almost surely, 2^188874988 is an apocalyptic number.

It is an amenable number.

188874988 is a deficient number, since it is larger than the sum of its proper divisors (156027332).

188874988 is a wasteful number, since it uses less digits than its factorization.

188874988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053016 (or 2053014 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 61.

The square root of 188874988 is about 13743.1796903046. The cubic root of 188874988 is about 573.7527981662.

The spelling of 188874988 in words is "one hundred eighty-eight million, eight hundred seventy-four thousand, nine hundred eighty-eight".