138713253 has 16 divisors (see below), whose sum is σ = 220563456. Its totient is φ = 75818160.

The previous prime is 138713233. The next prime is 138713257. The reversal of 138713253 is 352317831.

It is not a de Polignac number, because 138713253 - 2⁵ = 138713221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138713257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143113 + ... + 144078.

It is an arithmetic number, because the mean of its divisors is an integer number (13785216).

Almost surely, 2^138713253 is an apocalyptic number.

It is an amenable number.

138713253 is a deficient number, since it is larger than the sum of its proper divisors (81850203).

138713253 is a wasteful number, since it uses less digits than its factorization.

138713253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287224.

The product of its digits is 15120, while the sum is 33.

The square root of 138713253 is about 11777.6590628189. The cubic root of 138713253 is about 517.6536956259.

The spelling of 138713253 in words is "one hundred thirty-eight million, seven hundred thirteen thousand, two hundred fifty-three".