138752357 has 16 divisors (see below), whose sum is σ = 146266560. Its totient is φ = 131494272.

The previous prime is 138752333. The next prime is 138752363. The reversal of 138752357 is 753257831.

It is not a de Polignac number, because 138752357 - 2⁸ = 138752101 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 (138757357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243569 + ... + 244137.

It is an arithmetic number, because the mean of its divisors is an integer number (9141660).

Almost surely, 2^138752357 is an apocalyptic number.

It is an amenable number.

138752357 is a deficient number, since it is larger than the sum of its proper divisors (7514203).

138752357 is a wasteful number, since it uses less digits than its factorization.

138752357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its digits is 176400, while the sum is 41.

The square root of 138752357 is about 11779.3190380429. The cubic root of 138752357 is about 517.7023341610.

The spelling of 138752357 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, three hundred fifty-seven".