138194995 has 8 divisors (see below), whose sum is σ = 166793616. Its totient is φ = 109916256.

The previous prime is 138194983. The next prime is 138195007. The reversal of 138194995 is 599491831.

It is an interprime number because it is at equal distance from previous prime (138194983) and next prime (138195007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138194995 - 2²³ = 129806387 is a prime.

It is a Duffinian 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, 79017 + ... + 80746.

It is an arithmetic number, because the mean of its divisors is an integer number (20849202).

Almost surely, 2^138194995 is an apocalyptic number.

138194995 is a deficient number, since it is larger than the sum of its proper divisors (28598621).

138194995 is a wasteful number, since it uses less digits than its factorization.

138194995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159941.

The product of its digits is 349920, while the sum is 49.

The square root of 138194995 is about 11755.6367330741. The cubic root of 138194995 is about 517.0082082135.

The spelling of 138194995 in words is "one hundred thirty-eight million, one hundred ninety-four thousand, nine hundred ninety-five".