138241615 has 16 divisors (see below), whose sum is σ = 175550976. Its totient is φ = 104288800.

The previous prime is 138241613. The next prime is 138241639. The reversal of 138241615 is 516142831.

It is not a de Polignac number, because 138241615 - 2¹ = 138241613 is a prime.

It is a super-2 number, since 2×138241615² = 38221488235616450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138241613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301 + ... + 16630.

It is an arithmetic number, because the mean of its divisors is an integer number (10971936).

Almost surely, 2^138241615 is an apocalyptic number.

138241615 is a deficient number, since it is larger than the sum of its proper divisors (37309361).

138241615 is a wasteful number, since it uses less digits than its factorization.

138241615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030.

The product of its digits is 5760, while the sum is 31.

The square root of 138241615 is about 11757.6194444284. The cubic root of 138241615 is about 517.0663391484.

The spelling of 138241615 in words is "one hundred thirty-eight million, two hundred forty-one thousand, six hundred fifteen".