2147164644 has 24 divisors (see below), whose sum is σ = 5011907040. Its totient is φ = 715456384.

The previous prime is 2147164637. The next prime is 2147164697. The reversal of 2147164644 is 4464617412.

It is a super-2 number, since 2×2147164644² = 9220632016887293472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2092 + ... + 65564.

It is an arithmetic number, because the mean of its divisors is an integer number (208829460).

Almost surely, 2^2147164644 is an apocalyptic number.

It is an amenable number.

2147164644 is an abundant number, since it is smaller than the sum of its proper divisors (2864742396).

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

2147164644 is a wasteful number, since it uses less digits than its factorization.

2147164644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66299 (or 66297 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 2147164644 is about 46337.5079606144. The cubic root of 2147164644 is about 1290.0952684884.

The spelling of 2147164644 in words is "two billion, one hundred forty-seven million, one hundred sixty-four thousand, six hundred forty-four".