2126931379 has 2 divisors, whose sum is σ = 2126931380. Its totient is φ = 2126931378.

The previous prime is 2126931337. The next prime is 2126931397. The reversal of 2126931379 is 9731396212.

Together with next prime (2126931397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2126931379 - 2¹³ = 2126923187 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126938379) by changing a digit.

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 as a sum of consecutive naturals, namely, 1063465689 + 1063465690.

It is an arithmetic number, because the mean of its divisors is an integer number (1063465690).

Almost surely, 2^2126931379 is an apocalyptic number.

2126931379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126931379 is an equidigital number, since it uses as much as digits as its factorization.

2126931379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 2126931379 is about 46118.6662751645. Note that the first 3 decimals coincide. The cubic root of 2126931379 is about 1286.0301769357.

The spelling of 2126931379 in words is "two billion, one hundred twenty-six million, nine hundred thirty-one thousand, three hundred seventy-nine".