138937468 has 6 divisors (see below), whose sum is σ = 243140576. Its totient is φ = 69468732.

The previous prime is 138937459. The next prime is 138937471. The reversal of 138937468 is 864739831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17367180 + ... + 17367187.

Almost surely, 2^138937468 is an apocalyptic number.

It is an amenable number.

138937468 is a deficient number, since it is larger than the sum of its proper divisors (104203108).

138937468 is a wasteful number, since it uses less digits than its factorization.

138937468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34734371 (or 34734369 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 138937468 is about 11787.1738767187. The cubic root of 138937468 is about 517.9324559247.

The spelling of 138937468 in words is "one hundred thirty-eight million, nine hundred thirty-seven thousand, four hundred sixty-eight".