138327715 has 4 divisors (see below), whose sum is σ = 165993264. Its totient is φ = 110662168.

The previous prime is 138327713. The next prime is 138327751. The reversal of 138327715 is 517723831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517723831 = 17 ⋅30454343.

It is a cyclic number.

It is not a de Polignac number, because 138327715 - 2¹ = 138327713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138327713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13832767 + ... + 13832776.

It is an arithmetic number, because the mean of its divisors is an integer number (41498316).

Almost surely, 2^138327715 is an apocalyptic number.

138327715 is a deficient number, since it is larger than the sum of its proper divisors (27665549).

138327715 is an equidigital number, since it uses as much as digits as its factorization.

138327715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27665548.

The product of its digits is 35280, while the sum is 37.

The square root of 138327715 is about 11761.2803299641. The cubic root of 138327715 is about 517.1736637348.

The spelling of 138327715 in words is "one hundred thirty-eight million, three hundred twenty-seven thousand, seven hundred fifteen".