138407654 has 24 divisors (see below), whose sum is σ = 263464488. Its totient is φ = 53924640.

The previous prime is 138407627. The next prime is 138407663. The reversal of 138407654 is 456704831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63119 + ... + 65274.

It is an arithmetic number, because the mean of its divisors is an integer number (10977687).

Almost surely, 2^138407654 is an apocalyptic number.

138407654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138407654 is a deficient number, since it is larger than the sum of its proper divisors (125056834).

138407654 is a wasteful number, since it uses less digits than its factorization.

138407654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128420 (or 128413 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 138407654 is about 11764.6782361440. The cubic root of 138407654 is about 517.2732687060.

The spelling of 138407654 in words is "one hundred thirty-eight million, four hundred seven thousand, six hundred fifty-four".