2165572983 has 24 divisors (see below), whose sum is σ = 3467205120. Its totient is φ = 1197549360.

The previous prime is 2165572979. The next prime is 2165572991. The reversal of 2165572983 is 3892755612.

It is not a de Polignac number, because 2165572983 - 2² = 2165572979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165572943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233053 + ... + 242166.

It is an arithmetic number, because the mean of its divisors is an integer number (144466880).

Almost surely, 2^2165572983 is an apocalyptic number.

2165572983 is a deficient number, since it is larger than the sum of its proper divisors (1301632137).

2165572983 is a wasteful number, since it uses less digits than its factorization.

2165572983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475267 (or 475260 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 2165572983 is about 46535.7172825347. The cubic root of 2165572983 is about 1293.7715840783.

The spelling of 2165572983 in words is "two billion, one hundred sixty-five million, five hundred seventy-two thousand, nine hundred eighty-three".