4991276137 has 2 divisors, whose sum is σ = 4991276138. Its totient is φ = 4991276136.

The previous prime is 4991276123. The next prime is 4991276167. The reversal of 4991276137 is 7316721994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4804707856 + 186568281 = 69316^2 + 13659^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991276137 - 2¹¹ = 4991274089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4991276167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495638068 + 2495638069.

It is an arithmetic number, because the mean of its divisors is an integer number (2495638069).

Almost surely, 2^4991276137 is an apocalyptic number.

It is an amenable number.

4991276137 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991276137 is an equidigital number, since it uses as much as digits as its factorization.

4991276137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 4991276137 is about 70648.9641608424. The cubic root of 4991276137 is about 1708.9808613268.

The spelling of 4991276137 in words is "four billion, nine hundred ninety-one million, two hundred seventy-six thousand, one hundred thirty-seven".