2162621604 has 48 divisors (see below), whose sum is σ = 5928310080. Its totient is φ = 604928640.

The previous prime is 2162621567. The next prime is 2162621627. The reversal of 2162621604 is 4061262612.

It is a super-3 number, since 3×2162621604³ (a number of 29 digits) contains 333 as substring.

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, 628419 + ... + 631850.

It is an arithmetic number, because the mean of its divisors is an integer number (123506460).

Almost surely, 2^2162621604 is an apocalyptic number.

It is an amenable number.

2162621604 is an abundant number, since it is smaller than the sum of its proper divisors (3765688476).

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

2162621604 is a wasteful number, since it uses less digits than its factorization.

2162621604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260300 (or 1260298 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2162621604 is about 46503.9955702733. The cubic root of 2162621604 is about 1293.1835724550.

The spelling of 2162621604 in words is "two billion, one hundred sixty-two million, six hundred twenty-one thousand, six hundred four".