138336955 has 8 divisors (see below), whose sum is σ = 166999392. Its totient is φ = 110006208.

The previous prime is 138336899. The next prime is 138337021. The reversal of 138336955 is 559633831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138336955 - 2⁷ = 138336827 is a prime.

It is a super-2 number, since 2×138336955² = 38274226237344050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 82002 + ... + 83671.

It is an arithmetic number, because the mean of its divisors is an integer number (20874924).

Almost surely, 2^138336955 is an apocalyptic number.

138336955 is a deficient number, since it is larger than the sum of its proper divisors (28662437).

138336955 is a wasteful number, since it uses less digits than its factorization.

138336955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165845.

The product of its digits is 291600, while the sum is 43.

The square root of 138336955 is about 11761.6731377810. The cubic root of 138336955 is about 517.1851788488.

The spelling of 138336955 in words is "one hundred thirty-eight million, three hundred thirty-six thousand, nine hundred fifty-five".