2126931345 has 256 divisors, whose sum is σ = 5059584000. Its totient is φ = 827988480.

The previous prime is 2126931337. The next prime is 2126931379. The reversal of 2126931345 is 5431396212.

2126931345 is a `hidden beast` number, since 21 + 269 + 31 + 345 = 666.

It is not a de Polignac number, because 2126931345 - 2³ = 2126931337 is a prime.

Its product of digits (38880) is a multiple of the sum of its prime factors (162).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 23898061 + ... + 23898149.

It is an arithmetic number, because the mean of its divisors is an integer number (19764000).

Almost surely, 2^2126931345 is an apocalyptic number.

It is an amenable number.

2126931345 is an abundant number, since it is smaller than the sum of its proper divisors (2932652655).

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

2126931345 is a wasteful number, since it uses less digits than its factorization.

2126931345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 134 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2126931345 is about 46118.6659065502. The cubic root of 2126931345 is about 1286.0301700831.

The spelling of 2126931345 in words is "two billion, one hundred twenty-six million, nine hundred thirty-one thousand, three hundred forty-five".