138772163 has 16 divisors (see below), whose sum is σ = 148282080. Its totient is φ = 129620736.

The previous prime is 138772147. The next prime is 138772201. The reversal of 138772163 is 361277831.

138772163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 138772163 - 2⁴ = 138772147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138732163) 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, 303431 + ... + 303887.

It is an arithmetic number, because the mean of its divisors is an integer number (9267630).

Almost surely, 2^138772163 is an apocalyptic number.

138772163 is a deficient number, since it is larger than the sum of its proper divisors (9509917).

138772163 is a wasteful number, since it uses less digits than its factorization.

138772163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 42336, while the sum is 38.

The square root of 138772163 is about 11780.1597187814. The cubic root of 138772163 is about 517.7269658738.

The spelling of 138772163 in words is "one hundred thirty-eight million, seven hundred seventy-two thousand, one hundred sixty-three".