138387115 has 8 divisors (see below), whose sum is σ = 169926768. Its totient is φ = 108134880.

The previous prime is 138387107. The next prime is 138387133. The reversal of 138387115 is 511783831.

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

It is not a de Polignac number, because 138387115 - 2³ = 138387107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321616 + ... + 322045.

It is an arithmetic number, because the mean of its divisors is an integer number (21240846).

Almost surely, 2^138387115 is an apocalyptic number.

138387115 is a deficient number, since it is larger than the sum of its proper divisors (31539653).

138387115 is an equidigital number, since it uses as much as digits as its factorization.

138387115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643709.

The product of its digits is 20160, while the sum is 37.

The square root of 138387115 is about 11763.8052942065. The cubic root of 138387115 is about 517.2476805227.

The spelling of 138387115 in words is "one hundred thirty-eight million, three hundred eighty-seven thousand, one hundred fifteen".