195038139 has 16 divisors (see below), whose sum is σ = 265596032. Its totient is φ = 127277568.

The previous prime is 195038099. The next prime is 195038141. The reversal of 195038139 is 931830591.

195038139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195038139 - 2⁸ = 195037883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195038097 and 195038106.

It is not an unprimeable number, because it can be changed into a prime (195038149) 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, 29787 + ... + 35739.

It is an arithmetic number, because the mean of its divisors is an integer number (16599752).

Almost surely, 2^195038139 is an apocalyptic number.

195038139 is a deficient number, since it is larger than the sum of its proper divisors (70557893).

195038139 is a wasteful number, since it uses less digits than its factorization.

195038139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 195038139 is about 13965.6055722622. The cubic root of 195038139 is about 579.9268030894.

The spelling of 195038139 in words is "one hundred ninety-five million, thirty-eight thousand, one hundred thirty-nine".