138716633 has 4 divisors (see below), whose sum is σ = 151327248. Its totient is φ = 126106020.

The previous prime is 138716621. The next prime is 138716671. The reversal of 138716633 is 336617831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138716633 - 2⁶ = 138716569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138716533) 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, 6305291 + ... + 6305312.

It is an arithmetic number, because the mean of its divisors is an integer number (37831812).

Almost surely, 2^138716633 is an apocalyptic number.

It is an amenable number.

138716633 is a deficient number, since it is larger than the sum of its proper divisors (12610615).

138716633 is a wasteful number, since it uses less digits than its factorization.

138716633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12610614.

The product of its digits is 54432, while the sum is 38.

The square root of 138716633 is about 11777.8025539572. The cubic root of 138716633 is about 517.6579001155.

The spelling of 138716633 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, six hundred thirty-three".