1391912016 has 40 divisors (see below), whose sum is σ = 3922662624. Its totient is φ = 421791360.

The previous prime is 1391911973. The next prime is 1391912033. The reversal of 1391912016 is 6102191931.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 1317571 + ... + 1318626.

Almost surely, 2^1391912016 is an apocalyptic number.

1391912016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1391912016 is an abundant number, since it is smaller than the sum of its proper divisors (2530750608).

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

1391912016 is a wasteful number, since it uses less digits than its factorization.

1391912016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636219 (or 2636213 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1391912016 is about 37308.3370843569. The cubic root of 1391912016 is about 1116.5305091976.

The spelling of 1391912016 in words is "one billion, three hundred ninety-one million, nine hundred twelve thousand, sixteen".