138772195 has 4 divisors (see below), whose sum is σ = 166526640. Its totient is φ = 111017752.

The previous prime is 138772147. The next prime is 138772201. The reversal of 138772195 is 591277831.

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

It is a cyclic number.

It is not a de Polignac number, because 138772195 - 2¹¹ = 138770147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13877215 + ... + 13877224.

It is an arithmetic number, because the mean of its divisors is an integer number (41631660).

Almost surely, 2^138772195 is an apocalyptic number.

138772195 is a deficient number, since it is larger than the sum of its proper divisors (27754445).

138772195 is an equidigital number, since it uses as much as digits as its factorization.

138772195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27754444.

The product of its digits is 105840, while the sum is 43.

The square root of 138772195 is about 11780.1610769972. The cubic root of 138772195 is about 517.7270056686.

The spelling of 138772195 in words is "one hundred thirty-eight million, seven hundred seventy-two thousand, one hundred ninety-five".