139448979318 has 16 divisors (see below), whose sum is σ = 304252318656. Its totient is φ = 42257266440.

The previous prime is 139448979269. The next prime is 139448979337. The reversal of 139448979318 is 813979844931.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 2112863323 = 139448979318 / (1 + 3 + 9 + 4 + 4 + 8 + 9 + 7 + 9 + 3 + 1 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056431596 + ... + 1056431727.

It is an arithmetic number, because the mean of its divisors is an integer number (19015769916).

Almost surely, 2^139448979318 is an apocalyptic number.

139448979318 is an abundant number, since it is smaller than the sum of its proper divisors (164803339338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139448979318 is a wasteful number, since it uses less digits than its factorization.

139448979318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112863339.

The product of its digits is 47029248, while the sum is 66.

The spelling of 139448979318 in words is "one hundred thirty-nine billion, four hundred forty-eight million, nine hundred seventy-nine thousand, three hundred eighteen".