138326115 has 8 divisors (see below), whose sum is σ = 221321808. Its totient is φ = 73773920.

The previous prime is 138326113. The next prime is 138326119. The reversal of 138326115 is 511623831.

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

It is not a de Polignac number, because 138326115 - 2¹ = 138326113 is a prime.

It is a super-2 number, since 2×138326115² = 38268228181986450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138326113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610856 + ... + 4610885.

It is an arithmetic number, because the mean of its divisors is an integer number (27665226).

Almost surely, 2^138326115 is an apocalyptic number.

138326115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138326115 is a deficient number, since it is larger than the sum of its proper divisors (82995693).

138326115 is an equidigital number, since it uses as much as digits as its factorization.

138326115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221749.

The product of its digits is 4320, while the sum is 30.

The square root of 138326115 is about 11761.2123099619. The cubic root of 138326115 is about 517.1716697235.

Adding to 138326115 its reverse (511623831), we get a palindrome (649949946).

The spelling of 138326115 in words is "one hundred thirty-eight million, three hundred twenty-six thousand, one hundred fifteen".