138134913 has 16 divisors (see below), whose sum is σ = 210693120. Its totient is φ = 78858576.

The previous prime is 138134903. The next prime is 138134923. The reversal of 138134913 is 319431831.

It is an interprime number because it is at equal distance from previous prime (138134903) and next prime (138134923).

It is not a de Polignac number, because 138134913 - 2⁵ = 138134881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138134903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25206 + ... + 30192.

It is an arithmetic number, because the mean of its divisors is an integer number (13168320).

Almost surely, 2^138134913 is an apocalyptic number.

It is an amenable number.

138134913 is a deficient number, since it is larger than the sum of its proper divisors (72558207).

138134913 is a wasteful number, since it uses less digits than its factorization.

138134913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316.

The product of its digits is 7776, while the sum is 33.

The square root of 138134913 is about 11753.0810003165. The cubic root of 138134913 is about 516.9332720941.

The spelling of 138134913 in words is "one hundred thirty-eight million, one hundred thirty-four thousand, nine hundred thirteen".