2162621930 has 32 divisors (see below), whose sum is σ = 4602234240. Its totient is φ = 715901760.

The previous prime is 2162621927. The next prime is 2162621939. The reversal of 2162621930 is 391262612.

It is a happy number.

It is a super-2 number, since 2×2162621930² = 9353867224233849800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2162621939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530636 + ... + 534695.

It is an arithmetic number, because the mean of its divisors is an integer number (143819820).

Almost surely, 2^2162621930 is an apocalyptic number.

2162621930 is an abundant number, since it is smaller than the sum of its proper divisors (2439612310).

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

2162621930 is a wasteful number, since it uses less digits than its factorization.

2162621930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065374.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2162621930 is about 46503.9990753483. Note that the first 3 decimals coincide. The cubic root of 2162621930 is about 1293.1836374344.

The spelling of 2162621930 in words is "two billion, one hundred sixty-two million, six hundred twenty-one thousand, nine hundred thirty".