2164526520 has 64 divisors (see below), whose sum is σ = 6993090720. Its totient is φ = 532806144.

The previous prime is 2164526503. The next prime is 2164526521. The reversal of 2164526520 is 256254612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164526521) 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, 692199 + ... + 695318.

Almost surely, 2^2164526520 is an apocalyptic number.

2164526520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164526520 is an abundant number, since it is smaller than the sum of its proper divisors (4828564200).

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

2164526520 is a wasteful number, since it uses less digits than its factorization.

2164526520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387544 (or 1387540 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2164526520 is about 46524.4722699785. The cubic root of 2164526520 is about 1293.5631554484.

The spelling of 2164526520 in words is "two billion, one hundred sixty-four million, five hundred twenty-six thousand, five hundred twenty".