63138438 has 24 divisors (see below), whose sum is σ = 149236776. Its totient is φ = 19132800.

The previous prime is 63138409. The next prime is 63138451. The reversal of 63138438 is 83483136.

It is a happy number.

63138438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 159243 + ... + 159638.

It is an arithmetic number, because the mean of its divisors is an integer number (6218199).

Almost surely, 2^63138438 is an apocalyptic number.

63138438 is an abundant number, since it is smaller than the sum of its proper divisors (86098338).

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

63138438 is a wasteful number, since it uses less digits than its factorization.

63138438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318900 (or 318897 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 63138438 is about 7945.9699219164. The cubic root of 63138438 is about 398.1969640315.

The spelling of 63138438 in words is "sixty-three million, one hundred thirty-eight thousand, four hundred thirty-eight".