2086831979 has 2 divisors, whose sum is σ = 2086831980. Its totient is φ = 2086831978.

The previous prime is 2086831973. The next prime is 2086832051. The reversal of 2086831979 is 9791386802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2086831979 - 2⁴ = 2086831963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2086831979.

It is not a weakly prime, because it can be changed into another prime (2086831973) 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, 1043415989 + 1043415990.

It is an arithmetic number, because the mean of its divisors is an integer number (1043415990).

Almost surely, 2^2086831979 is an apocalyptic number.

2086831979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086831979 is an equidigital number, since it uses as much as digits as its factorization.

2086831979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 2086831979 is about 45681.8561247242. The cubic root of 2086831979 is about 1277.8969328611.

The spelling of 2086831979 in words is "two billion, eighty-six million, eight hundred thirty-one thousand, nine hundred seventy-nine".