2164261264 has 40 divisors (see below), whose sum is σ = 4671808128. Its totient is φ = 962820480.

The previous prime is 2164261261. The next prime is 2164261283. The reversal of 2164261264 is 4621624612.

It is not an unprimeable number, because it can be changed into a prime (2164261261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122547 + ... + 139090.

Almost surely, 2^2164261264 is an apocalyptic number.

It is an amenable number.

2164261264 is an abundant number, since it is smaller than the sum of its proper divisors (2507546864).

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

2164261264 is a wasteful number, since it uses less digits than its factorization.

2164261264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261703 (or 261697 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 2164261264 is about 46521.6214678723. The cubic root of 2164261264 is about 1293.5103125745.

Adding to 2164261264 its reverse (4621624612), we get a palindrome (6785885876).

The spelling of 2164261264 in words is "two billion, one hundred sixty-four million, two hundred sixty-one thousand, two hundred sixty-four".