138501379 has 8 divisors (see below), whose sum is σ = 141120000. Its totient is φ = 135891912.

The previous prime is 138501373. The next prime is 138501437. The reversal of 138501379 is 973105831.

It is a happy number.

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 138501379 - 2⁵ = 138501347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138501373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33382 + ... + 37300.

It is an arithmetic number, because the mean of its divisors is an integer number (17640000).

Almost surely, 2^138501379 is an apocalyptic number.

138501379 is a deficient number, since it is larger than the sum of its proper divisors (2618621).

138501379 is an equidigital number, since it uses as much as digits as its factorization.

138501379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 138501379 is about 11768.6608838899. The cubic root of 138501379 is about 517.3900023704.

The spelling of 138501379 in words is "one hundred thirty-eight million, five hundred one thousand, three hundred seventy-nine".