63189988 has 12 divisors (see below), whose sum is σ = 111287932. Its totient is φ = 31393440.

The previous prime is 63189941. The next prime is 63190007. The reversal of 63189988 is 88998136.

63189988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40551424 + 22638564 = 6368^2 + 4758^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49683 + ... + 50938.

Almost surely, 2^63189988 is an apocalyptic number.

It is an amenable number.

63189988 is a deficient number, since it is larger than the sum of its proper divisors (48097944).

63189988 is a wasteful number, since it uses less digits than its factorization.

63189988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100782 (or 100780 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 63189988 is about 7949.2130428112. The cubic root of 63189988 is about 398.3053051634.

The spelling of 63189988 in words is "sixty-three million, one hundred eighty-nine thousand, nine hundred eighty-eight".