138564854 has 16 divisors (see below), whose sum is σ = 214915200. Its totient is φ = 66934080.

The previous prime is 138564847. The next prime is 138564913. The reversal of 138564854 is 458465831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43922 + ... + 46970.

It is an arithmetic number, because the mean of its divisors is an integer number (13432200).

Almost surely, 2^138564854 is an apocalyptic number.

138564854 is a deficient number, since it is larger than the sum of its proper divisors (76350346).

138564854 is a wasteful number, since it uses less digits than its factorization.

138564854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its digits is 460800, while the sum is 44.

The square root of 138564854 is about 11771.3573558872. The cubic root of 138564854 is about 517.4690300182.

The spelling of 138564854 in words is "one hundred thirty-eight million, five hundred sixty-four thousand, eight hundred fifty-four".