8261874979 has 2 divisors, whose sum is σ = 8261874980. Its totient is φ = 8261874978.

The previous prime is 8261874941. The next prime is 8261874997. The reversal of 8261874979 is 9794781628.

Together with next prime (8261874997) 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 8261874979 - 2²⁵ = 8228320547 is a prime.

It is not a weakly prime, because it can be changed into another prime (8261874479) by changing a digit.

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 as a sum of consecutive naturals, namely, 4130937489 + 4130937490.

It is an arithmetic number, because the mean of its divisors is an integer number (4130937490).

Almost surely, 2^8261874979 is an apocalyptic number.

8261874979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8261874979 is an equidigital number, since it uses as much as digits as its factorization.

8261874979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 61.

The square root of 8261874979 is about 90894.8567246794. The cubic root of 8261874979 is about 2021.5890332097.

The spelling of 8261874979 in words is "eight billion, two hundred sixty-one million, eight hundred seventy-four thousand, nine hundred seventy-nine".