2145668604 has 48 divisors (see below), whose sum is σ = 5069988000. Its totient is φ = 706185216.

The previous prime is 2145668599. The next prime is 2145668641. The reversal of 2145668604 is 4068665412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384422 + ... + 1385970.

It is an arithmetic number, because the mean of its divisors is an integer number (105624750).

Almost surely, 2^2145668604 is an apocalyptic number.

It is an amenable number.

2145668604 is an abundant number, since it is smaller than the sum of its proper divisors (2924319396).

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

2145668604 is a wasteful number, since it uses less digits than its factorization.

2145668604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 2145668604 is about 46321.3622856669. The cubic root of 2145668604 is about 1289.7955736395.

The spelling of 2145668604 in words is "two billion, one hundred forty-five million, six hundred sixty-eight thousand, six hundred four".