138391962348 has 48 divisors (see below), whose sum is σ = 339941719040. Its totient is φ = 43698657600.

The previous prime is 138391962323. The next prime is 138391962409. The reversal of 138391962348 is 843269193831.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3269238 + ... + 3311298.

Almost surely, 2^138391962348 is an apocalyptic number.

It is an amenable number.

138391962348 is an abundant number, since it is smaller than the sum of its proper divisors (201549756692).

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

138391962348 is a wasteful number, since it uses less digits than its factorization.

138391962348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56518 (or 56516 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The spelling of 138391962348 in words is "one hundred thirty-eight billion, three hundred ninety-one million, nine hundred sixty-two thousand, three hundred forty-eight".