138492013 has 8 divisors (see below), whose sum is σ = 159969600. Its totient is φ = 118495680.

The previous prime is 138492001. The next prime is 138492031. The reversal of 138492013 is 310294831.

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

It is a cyclic number.

It is not a de Polignac number, because 138492013 - 2⁵ = 138491981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138492043) 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, 370113 + ... + 370486.

It is an arithmetic number, because the mean of its divisors is an integer number (19996200).

Almost surely, 2^138492013 is an apocalyptic number.

It is an amenable number.

138492013 is a deficient number, since it is larger than the sum of its proper divisors (21477587).

138492013 is a wasteful number, since it uses less digits than its factorization.

138492013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740627.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 138492013 is about 11768.2629559336. The cubic root of 138492013 is about 517.3783394684.

The spelling of 138492013 in words is "one hundred thirty-eight million, four hundred ninety-two thousand, thirteen".