2137977979 has 2 divisors, whose sum is σ = 2137977980. Its totient is φ = 2137977978.

The previous prime is 2137977913. The next prime is 2137978001. The reversal of 2137977979 is 9797797312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2137977979 - 2⁹ = 2137977467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2137978979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068988989 + 1068988990.

It is an arithmetic number, because the mean of its divisors is an integer number (1068988990).

Almost surely, 2^2137977979 is an apocalyptic number.

2137977979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137977979 is an equidigital number, since it uses as much as digits as its factorization.

2137977979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10501974, while the sum is 61.

The square root of 2137977979 is about 46238.2739621626. The cubic root of 2137977979 is about 1288.2527431416.

The spelling of 2137977979 in words is "two billion, one hundred thirty-seven million, nine hundred seventy-seven thousand, nine hundred seventy-nine".