138795197 has 4 divisors (see below), whose sum is σ = 138897660. Its totient is φ = 138692736.

The previous prime is 138795169. The next prime is 138795211. The reversal of 138795197 is 791597831.

138795197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85636516 + 53158681 = 9254^2 + 7291^2 .

It is a cyclic number.

It is not a de Polignac number, because 138795197 - 2⁸ = 138794941 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 (138794197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49172 + ... + 51917.

It is an arithmetic number, because the mean of its divisors is an integer number (34724415).

Almost surely, 2^138795197 is an apocalyptic number.

It is an amenable number.

138795197 is a deficient number, since it is larger than the sum of its proper divisors (102463).

138795197 is a wasteful number, since it uses less digits than its factorization.

138795197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102462.

The product of its digits is 476280, while the sum is 50.

The square root of 138795197 is about 11781.1373389839. The cubic root of 138795197 is about 517.7556091380.

The spelling of 138795197 in words is "one hundred thirty-eight million, seven hundred ninety-five thousand, one hundred ninety-seven".