138467955 has 32 divisors (see below), whose sum is σ = 228501504. Its totient is φ = 71559936.

The previous prime is 138467929. The next prime is 138467971. The reversal of 138467955 is 559764831.

It is not a de Polignac number, because 138467955 - 2⁸ = 138467699 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87582 + ... + 89148.

It is an arithmetic number, because the mean of its divisors is an integer number (7140672).

Almost surely, 2^138467955 is an apocalyptic number.

138467955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138467955 is a deficient number, since it is larger than the sum of its proper divisors (90033549).

138467955 is a wasteful number, since it uses less digits than its factorization.

138467955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755.

The product of its digits is 907200, while the sum is 48.

The square root of 138467955 is about 11767.2407555892. The cubic root of 138467955 is about 517.3483791152.

The spelling of 138467955 in words is "one hundred thirty-eight million, four hundred sixty-seven thousand, nine hundred fifty-five".