138695793 has 8 divisors (see below), whose sum is σ = 184990656. Its totient is φ = 92432400.

The previous prime is 138695789. The next prime is 138695807. The reversal of 138695793 is 397596831.

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

It is not a de Polignac number, because 138695793 - 2² = 138695789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138695723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5823 + ... + 17643.

It is an arithmetic number, because the mean of its divisors is an integer number (23123832).

Almost surely, 2^138695793 is an apocalyptic number.

It is an amenable number.

138695793 is a deficient number, since it is larger than the sum of its proper divisors (46294863).

138695793 is a wasteful number, since it uses less digits than its factorization.

138695793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15735.

The product of its digits is 1224720, while the sum is 51.

The square root of 138695793 is about 11776.9178056060. The cubic root of 138695793 is about 517.6319754885.

It can be divided in two parts, 1386 and 95793, that added together give a palindrome (97179).

The spelling of 138695793 in words is "one hundred thirty-eight million, six hundred ninety-five thousand, seven hundred ninety-three".