2126331664 has 30 divisors (see below), whose sum is σ = 4256981070. Its totient is φ = 1028862720.

The previous prime is 2126331619. The next prime is 2126331677. The reversal of 2126331664 is 4661336212.

It can be written as a sum of positive squares in only one way, i.e., 2070978064 + 55353600 = 45508^2 + 7440^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53769 + ... + 84520.

It is an arithmetic number, because the mean of its divisors is an integer number (141899369).

Almost surely, 2^2126331664 is an apocalyptic number.

It is an amenable number.

2126331664 is an abundant number, since it is smaller than the sum of its proper divisors (2130649406).

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

2126331664 is a wasteful number, since it uses less digits than its factorization.

2126331664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138359 (or 138322 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 2126331664 is about 46112.1639483553. The cubic root of 2126331664 is about 1285.9092947899.

Adding to 2126331664 its reverse (4661336212), we get a palindrome (6787667876).

The spelling of 2126331664 in words is "two billion, one hundred twenty-six million, three hundred thirty-one thousand, six hundred sixty-four".