138339195 has 32 divisors (see below), whose sum is σ = 225607680. Its totient is φ = 72374400.

The previous prime is 138339167. The next prime is 138339211. The reversal of 138339195 is 591933831.

It is a happy number.

It is not a de Polignac number, because 138339195 - 2⁵ = 138339163 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192046 + ... + 192764.

It is an arithmetic number, because the mean of its divisors is an integer number (7050240).

Almost surely, 2^138339195 is an apocalyptic number.

138339195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138339195 is a deficient number, since it is larger than the sum of its proper divisors (87268485).

138339195 is a wasteful number, since it uses less digits than its factorization.

138339195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 87480, while the sum is 42.

The square root of 138339195 is about 11761.7683619429. The cubic root of 138339195 is about 517.1879703144.

The spelling of 138339195 in words is "one hundred thirty-eight million, three hundred thirty-nine thousand, one hundred ninety-five".