138336651 has 48 divisors (see below), whose sum is σ = 217451520. Its totient is φ = 84522240.

The previous prime is 138336643. The next prime is 138336677. The reversal of 138336651 is 156633831.

It is a happy number.

It is not a de Polignac number, because 138336651 - 2³ = 138336643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138336691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 573891 + ... + 574131.

It is an arithmetic number, because the mean of its divisors is an integer number (4530240).

Almost surely, 2^138336651 is an apocalyptic number.

138336651 is a deficient number, since it is larger than the sum of its proper divisors (79114869).

138336651 is a wasteful number, since it uses less digits than its factorization.

138336651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 373 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 138336651 is about 11761.6602144425. The cubic root of 138336651 is about 517.1848000048.

The spelling of 138336651 in words is "one hundred thirty-eight million, three hundred thirty-six thousand, six hundred fifty-one".