138867465 has 24 divisors (see below), whose sum is σ = 244226304. Its totient is φ = 67328800.

The previous prime is 138867433. The next prime is 138867497. The reversal of 138867465 is 564768831.

It is an interprime number because it is at equal distance from previous prime (138867433) and next prime (138867497).

It is not a de Polignac number, because 138867465 - 2⁵ = 138867433 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36441 + ... + 40070.

It is an arithmetic number, because the mean of its divisors is an integer number (10176096).

Almost surely, 2^138867465 is an apocalyptic number.

138867465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138867465 is a deficient number, since it is larger than the sum of its proper divisors (105358839).

138867465 is a wasteful number, since it uses less digits than its factorization.

138867465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76541 (or 76530 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 138867465 is about 11784.2040460949. The cubic root of 138867465 is about 517.8454553548.

The spelling of 138867465 in words is "one hundred thirty-eight million, eight hundred sixty-seven thousand, four hundred sixty-five".