2331990664 has 16 divisors (see below), whose sum is σ = 4377203100. Its totient is φ = 1164736512.

The previous prime is 2331990653. The next prime is 2331990667. The reversal of 2331990664 is 4660991332.

It can be written as a sum of positive squares in 2 ways, for example, as 2331924100 + 66564 = 48290^2 + 258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2331990664.

It is not an unprimeable number, because it can be changed into a prime (2331990667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 149457 + ... + 164320.

Almost surely, 2^2331990664 is an apocalyptic number.

It is an amenable number.

2331990664 is a deficient number, since it is larger than the sum of its proper divisors (2045212436).

2331990664 is a wasteful number, since it uses less digits than its factorization.

2331990664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314712 (or 314708 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 2331990664 is about 48290.6892060985. The cubic root of 2331990664 is about 1326.0979462906.

The spelling of 2331990664 in words is "two billion, three hundred thirty-one million, nine hundred ninety thousand, six hundred sixty-four".