138293995 has 16 divisors (see below), whose sum is σ = 189961920. Its totient is φ = 94679424.

The previous prime is 138293971. The next prime is 138293999. The reversal of 138293995 is 599392831.

It is not a de Polignac number, because 138293995 - 2⁷ = 138293867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138293999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22029 + ... + 27601.

It is an arithmetic number, because the mean of its divisors is an integer number (11872620).

Almost surely, 2^138293995 is an apocalyptic number.

138293995 is a deficient number, since it is larger than the sum of its proper divisors (51667925).

138293995 is an equidigital number, since it uses as much as digits as its factorization.

138293995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6294.

The product of its digits is 524880, while the sum is 49.

The square root of 138293995 is about 11759.8467251916. The cubic root of 138293995 is about 517.1316366949.

The spelling of 138293995 in words is "one hundred thirty-eight million, two hundred ninety-three thousand, nine hundred ninety-five".