1389374680 has 16 divisors (see below), whose sum is σ = 3126093120. Its totient is φ = 555749856.

The previous prime is 1389374669. The next prime is 1389374681. The reversal of 1389374680 is 864739831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389374681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17367144 + ... + 17367223.

It is an arithmetic number, because the mean of its divisors is an integer number (195380820).

Almost surely, 2^1389374680 is an apocalyptic number.

1389374680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389374680 is an abundant number, since it is smaller than the sum of its proper divisors (1736718440).

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

1389374680 is a wasteful number, since it uses less digits than its factorization.

1389374680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34734378 (or 34734374 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 1389374680 is about 37274.3166268679. The cubic root of 1389374680 is about 1115.8516501377.

The spelling of 1389374680 in words is "one billion, three hundred eighty-nine million, three hundred seventy-four thousand, six hundred eighty".