138913413 has 4 divisors (see below), whose sum is σ = 185217888. Its totient is φ = 92608940.

The previous prime is 138913381. The next prime is 138913433. The reversal of 138913413 is 314319831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138913413 - 2⁵ = 138913381 is a prime.

It is a super-2 number, since 2×138913413² = 38593872622617138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138913433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23152233 + ... + 23152238.

It is an arithmetic number, because the mean of its divisors is an integer number (46304472).

Almost surely, 2^138913413 is an apocalyptic number.

It is an amenable number.

138913413 is a deficient number, since it is larger than the sum of its proper divisors (46304475).

138913413 is an equidigital number, since it uses as much as digits as its factorization.

138913413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46304474.

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

The square root of 138913413 is about 11786.1534437661. The cubic root of 138913413 is about 517.9025633779.

The spelling of 138913413 in words is "one hundred thirty-eight million, nine hundred thirteen thousand, four hundred thirteen".