138376365 has 32 divisors (see below), whose sum is σ = 230330496. Its totient is φ = 70882560.

The previous prime is 138376351. The next prime is 138376387. The reversal of 138376365 is 563673831.

It is not a de Polignac number, because 138376365 - 2⁵ = 138376333 is a prime.

It is a super-2 number, since 2×138376365² = 38296036781226450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 37587 + ... + 41103.

It is an arithmetic number, because the mean of its divisors is an integer number (7197828).

Almost surely, 2^138376365 is an apocalyptic number.

138376365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138376365 is a deficient number, since it is larger than the sum of its proper divisors (91954131).

138376365 is a wasteful number, since it uses less digits than its factorization.

138376365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629.

The product of its digits is 272160, while the sum is 42.

The square root of 138376365 is about 11763.3483753564. The cubic root of 138376365 is about 517.2342867985.

It can be divided in two parts, 13837 and 6365, that added together give a palindrome (20202).

The spelling of 138376365 in words is "one hundred thirty-eight million, three hundred seventy-six thousand, three hundred sixty-five".