138370165 has 8 divisors (see below), whose sum is σ = 171770040. Its totient is φ = 106878912.

The previous prime is 138370117. The next prime is 138370171. The reversal of 138370165 is 561073831.

It can be written as a sum of positive squares in 4 ways, for example, as 35976004 + 102394161 = 5998^2 + 10119^2 .

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 138370165 - 2²¹ = 136273013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138370165.

It is a congruent 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, 476994 + ... + 477283.

It is an arithmetic number, because the mean of its divisors is an integer number (21471255).

Almost surely, 2^138370165 is an apocalyptic number.

It is an amenable number.

138370165 is a deficient number, since it is larger than the sum of its proper divisors (33399875).

138370165 is an equidigital number, since it uses as much as digits as its factorization.

138370165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954311.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 138370165 is about 11763.0848419962. The cubic root of 138370165 is about 517.2265617306.

The spelling of 138370165 in words is "one hundred thirty-eight million, three hundred seventy thousand, one hundred sixty-five".