138511318 has 16 divisors (see below), whose sum is σ = 226981584. Its totient is φ = 62868960.

The previous prime is 138511283. The next prime is 138511319. The reversal of 138511318 is 813115831.

It is a self number, because there is not a number n which added to its sum of digits gives 138511318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138511319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12496 + ... + 20812.

It is an arithmetic number, because the mean of its divisors is an integer number (14186349).

Almost surely, 2^138511318 is an apocalyptic number.

138511318 is a deficient number, since it is larger than the sum of its proper divisors (88470266).

138511318 is a wasteful number, since it uses less digits than its factorization.

138511318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087.

The product of its digits is 2880, while the sum is 31.

The square root of 138511318 is about 11769.0831418594. The cubic root of 138511318 is about 517.4023782188.

The spelling of 138511318 in words is "one hundred thirty-eight million, five hundred eleven thousand, three hundred eighteen".