2164261332 has 24 divisors (see below), whose sum is σ = 5050780000. Its totient is φ = 721300896.

The previous prime is 2164261321. The next prime is 2164261397. The reversal of 2164261332 is 2331624612.

It is a super-2 number, since 2×2164261332² = 9368054226380828448, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2164261332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89919 + ... + 111417.

Almost surely, 2^2164261332 is an apocalyptic number.

It is an amenable number.

2164261332 is an abundant number, since it is smaller than the sum of its proper divisors (2886518668).

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

2164261332 is a wasteful number, since it uses less digits than its factorization.

2164261332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895 (or 29893 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 2164261332 is about 46521.6221987153. The cubic root of 2164261332 is about 1293.5103261216.

Adding to 2164261332 its reverse (2331624612), we get a palindrome (4495885944).

The spelling of 2164261332 in words is "two billion, one hundred sixty-four million, two hundred sixty-one thousand, three hundred thirty-two".