2015396664 has 16 divisors (see below), whose sum is σ = 5038491720. Its totient is φ = 671798880.

The previous prime is 2015396659. The next prime is 2015396693. The reversal of 2015396664 is 4666935102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41987407 + ... + 41987454.

Almost surely, 2^2015396664 is an apocalyptic number.

2015396664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2015396664 is an abundant number, since it is smaller than the sum of its proper divisors (3023095056).

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

2015396664 is a wasteful number, since it uses less digits than its factorization.

2015396664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83974870 (or 83974866 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 2015396664 is about 44893.1694581704. The cubic root of 2015396664 is about 1263.1458855576.

The spelling of 2015396664 in words is "two billion, fifteen million, three hundred ninety-six thousand, six hundred sixty-four".