138846015 has 192 divisors, whose sum is σ = 333573120. Its totient is φ = 53187840.

The previous prime is 138846007. The next prime is 138846017. The reversal of 138846015 is 510648831.

It is not a de Polignac number, because 138846015 - 2³ = 138846007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138846017) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3752577 + ... + 3752613.

It is an arithmetic number, because the mean of its divisors is an integer number (1737360).

Almost surely, 2^138846015 is an apocalyptic number.

138846015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138846015 is an abundant number, since it is smaller than the sum of its proper divisors (194727105).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138846015 is a wasteful number, since it uses less digits than its factorization.

138846015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 138846015 is about 11783.2938943234. The cubic root of 138846015 is about 517.8187911851.

The spelling of 138846015 in words is "one hundred thirty-eight million, eight hundred forty-six thousand, fifteen".