138957050 has 48 divisors (see below), whose sum is σ = 264744960. Its totient is φ = 54250560.

The previous prime is 138957041. The next prime is 138957083. The reversal of 138957050 is 50759831.

It is a junction number, because it is equal to n+sod(n) for n = 138956995 and 138957013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501512 + ... + 501788.

It is an arithmetic number, because the mean of its divisors is an integer number (5515520).

Almost surely, 2^138957050 is an apocalyptic number.

138957050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138957050 is a deficient number, since it is larger than the sum of its proper divisors (125787910).

138957050 is a wasteful number, since it uses less digits than its factorization.

138957050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 138957050 is about 11788.0044960969. The cubic root of 138957050 is about 517.9567874389.

The spelling of 138957050 in words is "one hundred thirty-eight million, nine hundred fifty-seven thousand, fifty".