138588751 has 8 divisors (see below), whose sum is σ = 158489504. Its totient is φ = 118713600.

The previous prime is 138588727. The next prime is 138588757. The reversal of 138588751 is 157885831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138588751 - 2¹⁵ = 138555983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138588757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7111 + ... + 18103.

It is an arithmetic number, because the mean of its divisors is an integer number (19811188).

Almost surely, 2^138588751 is an apocalyptic number.

138588751 is a deficient number, since it is larger than the sum of its proper divisors (19900753).

138588751 is a wasteful number, since it uses less digits than its factorization.

138588751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12801.

The product of its digits is 268800, while the sum is 46.

The square root of 138588751 is about 11772.3723607436. The cubic root of 138588751 is about 517.4987760090.

The spelling of 138588751 in words is "one hundred thirty-eight million, five hundred eighty-eight thousand, seven hundred fifty-one".