1391882064 has 60 divisors (see below), whose sum is σ = 3674107104. Its totient is φ = 454054592.

The previous prime is 1391881963. The next prime is 1391882071. The reversal of 1391882064 is 4602881931.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 99469 + ... + 112595.

Almost surely, 2^1391882064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391882064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837053552).

1391882064 is an abundant number, since it is smaller than the sum of its proper divisors (2282225040).

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

1391882064 is a wasteful number, since it uses less digits than its factorization.

1391882064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232 (or 13179 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1391882064 is about 37307.9356705782. The cubic root of 1391882064 is about 1116.5225004151.

The spelling of 1391882064 in words is "one billion, three hundred ninety-one million, eight hundred eighty-two thousand, sixty-four".