138115495 has 8 divisors (see below), whose sum is σ = 189415584. Its totient is φ = 94707744.

The previous prime is 138115477. The next prime is 138115499. The reversal of 138115495 is 594511831.

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 138115495 - 2¹¹ = 138113447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138115499) 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, 1973044 + ... + 1973113.

It is an arithmetic number, because the mean of its divisors is an integer number (23676948).

Almost surely, 2^138115495 is an apocalyptic number.

138115495 is a deficient number, since it is larger than the sum of its proper divisors (51300089).

138115495 is an equidigital number, since it uses as much as digits as its factorization.

138115495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946169.

The product of its digits is 21600, while the sum is 37.

The square root of 138115495 is about 11752.2548900200. The cubic root of 138115495 is about 516.9090487209.

It can be divided in two parts, 13811 and 5495, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 138115495 in words is "one hundred thirty-eight million, one hundred fifteen thousand, four hundred ninety-five".