2123815326 has 32 divisors (see below), whose sum is σ = 4475139840. Its totient is φ = 670086144.

The previous prime is 2123815283. The next prime is 2123815373. The reversal of 2123815326 is 6235183212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131806 + ... + 147038.

It is an arithmetic number, because the mean of its divisors is an integer number (139848120).

Almost surely, 2^2123815326 is an apocalyptic number.

2123815326 is an abundant number, since it is smaller than the sum of its proper divisors (2351324514).

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

2123815326 is a wasteful number, since it uses less digits than its factorization.

2123815326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16480.

The product of its digits is 17280, while the sum is 33.

The square root of 2123815326 is about 46084.8709014141. The cubic root of 2123815326 is about 1285.4018387261.

Adding to 2123815326 its reverse (6235183212), we get a palindrome (8358998538).

The spelling of 2123815326 in words is "two billion, one hundred twenty-three million, eight hundred fifteen thousand, three hundred twenty-six".