138418629379 has 4 divisors (see below), whose sum is σ = 139789110960. Its totient is φ = 137048147800.

The previous prime is 138418629367. The next prime is 138418629407. The reversal of 138418629379 is 973926814831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138418629379 - 2¹⁵ = 138418596611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138418629329) 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, 685240639 + ... + 685240840.

It is an arithmetic number, because the mean of its divisors is an integer number (34947277740).

Almost surely, 2^138418629379 is an apocalyptic number.

138418629379 is a deficient number, since it is larger than the sum of its proper divisors (1370481581).

138418629379 is a wasteful number, since it uses less digits than its factorization.

138418629379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370481580.

The product of its digits is 15676416, while the sum is 61.

The spelling of 138418629379 in words is "one hundred thirty-eight billion, four hundred eighteen million, six hundred twenty-nine thousand, three hundred seventy-nine".