2162164580 has 12 divisors (see below), whose sum is σ = 4540545660. Its totient is φ = 864865824.

The previous prime is 2162164579. The next prime is 2162164637. The reversal of 2162164580 is 854612612.

It can be written as a sum of positive squares in 2 ways, for example, as 1328456704 + 833707876 = 36448^2 + 28874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2162164580.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54054095 + ... + 54054134.

It is an arithmetic number, because the mean of its divisors is an integer number (378378805).

Almost surely, 2^2162164580 is an apocalyptic number.

2162164580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2162164580 is an abundant number, since it is smaller than the sum of its proper divisors (2378381080).

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

2162164580 is a wasteful number, since it uses less digits than its factorization.

2162164580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108108238 (or 108108236 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2162164580 is about 46499.0814963048. The cubic root of 2162164580 is about 1293.0924704386.

The spelling of 2162164580 in words is "two billion, one hundred sixty-two million, one hundred sixty-four thousand, five hundred eighty".