138531416 has 16 divisors (see below), whose sum is σ = 260339400. Its totient is φ = 69107584.

The previous prime is 138531401. The next prime is 138531433. The reversal of 138531416 is 614135831.

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, 16001 + ... + 23088.

Almost surely, 2^138531416 is an apocalyptic number.

It is an amenable number.

138531416 is a deficient number, since it is larger than the sum of its proper divisors (121807984).

138531416 is a wasteful number, since it uses less digits than its factorization.

138531416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39538 (or 39534 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 138531416 is about 11769.9369581999. The cubic root of 138531416 is about 517.4274020466.

The spelling of 138531416 in words is "one hundred thirty-eight million, five hundred thirty-one thousand, four hundred sixteen".