2126858939 has 2 divisors, whose sum is σ = 2126858940. Its totient is φ = 2126858938.

The previous prime is 2126858911. The next prime is 2126858959. The reversal of 2126858939 is 9398586212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2126858939 - 2²⁰ = 2125810363 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126858959) 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, 1063429469 + 1063429470.

It is an arithmetic number, because the mean of its divisors is an integer number (1063429470).

Almost surely, 2^2126858939 is an apocalyptic number.

2126858939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126858939 is an equidigital number, since it uses as much as digits as its factorization.

2126858939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 53.

The square root of 2126858939 is about 46117.8809031811. The cubic root of 2126858939 is about 1286.0155767023.

The spelling of 2126858939 in words is "two billion, one hundred twenty-six million, eight hundred fifty-eight thousand, nine hundred thirty-nine".