138008395 has 16 divisors (see below), whose sum is σ = 197498880. Its totient is φ = 90519264.

The previous prime is 138008393. The next prime is 138008401. The reversal of 138008395 is 593800831.

It is a cyclic number.

It is not a de Polignac number, because 138008395 - 2¹ = 138008393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138008393) 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, 84915 + ... + 86524.

It is an arithmetic number, because the mean of its divisors is an integer number (12343680).

Almost surely, 2^138008395 is an apocalyptic number.

138008395 is a deficient number, since it is larger than the sum of its proper divisors (59490485).

138008395 is a wasteful number, since it uses less digits than its factorization.

138008395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171474.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 138008395 is about 11747.6974339655. The cubic root of 138008395 is about 516.7754038682.

The spelling of 138008395 in words is "one hundred thirty-eight million, eight thousand, three hundred ninety-five".