138386416 has 20 divisors (see below), whose sum is σ = 306427312. Its totient is φ = 59308416.

The previous prime is 138386399. The next prime is 138386419. The reversal of 138386416 is 614683831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138386419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617685 + ... + 617908.

Almost surely, 2^138386416 is an apocalyptic number.

138386416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138386416 is an abundant number, since it is smaller than the sum of its proper divisors (168040896).

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

138386416 is a wasteful number, since it uses less digits than its factorization.

138386416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235608 (or 1235602 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 138386416 is about 11763.7755843947. The cubic root of 138386416 is about 517.2468096403.

The spelling of 138386416 in words is "one hundred thirty-eight million, three hundred eighty-six thousand, four hundred sixteen".