138326855 has 4 divisors (see below), whose sum is σ = 165992232. Its totient is φ = 110661480.

The previous prime is 138326849. The next prime is 138326861. The reversal of 138326855 is 558623831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (138326849) and next prime (138326861).

It is not a de Polignac number, because 138326855 - 2⁸ = 138326599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13832681 + ... + 13832690.

It is an arithmetic number, because the mean of its divisors is an integer number (41498058).

Almost surely, 2^138326855 is an apocalyptic number.

138326855 is a deficient number, since it is larger than the sum of its proper divisors (27665377).

138326855 is an equidigital number, since it uses as much as digits as its factorization.

138326855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27665376.

The product of its digits is 172800, while the sum is 41.

The square root of 138326855 is about 11761.2437692618. The cubic root of 138326855 is about 517.1725919556.

The spelling of 138326855 in words is "one hundred thirty-eight million, three hundred twenty-six thousand, eight hundred fifty-five".