138170793 has 16 divisors (see below), whose sum is σ = 195461120. Its totient is φ = 86574096.

The previous prime is 138170789. The next prime is 138170797. The reversal of 138170793 is 397071831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138170789) and next prime (138170797).

It is not a de Polignac number, because 138170793 - 2² = 138170789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138170797) 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, 2305 + ... + 16782.

It is an arithmetic number, because the mean of its divisors is an integer number (12216320).

Almost surely, 2^138170793 is an apocalyptic number.

It is an amenable number.

138170793 is a deficient number, since it is larger than the sum of its proper divisors (57290327).

138170793 is a wasteful number, since it uses less digits than its factorization.

138170793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19236.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 138170793 is about 11754.6073094766. The cubic root of 138170793 is about 516.9780253472.

The spelling of 138170793 in words is "one hundred thirty-eight million, one hundred seventy thousand, seven hundred ninety-three".