2508991673 has 2 divisors, whose sum is σ = 2508991674. Its totient is φ = 2508991672.

The previous prime is 2508991669. The next prime is 2508991691. The reversal of 2508991673 is 3761998052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947633424 + 561358249 = 44132^2 + 23693^2 .

It is a cyclic number.

It is not a de Polignac number, because 2508991673 - 2² = 2508991669 is a prime.

It is not a weakly prime, because it can be changed into another prime (2508991643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254495836 + 1254495837.

It is an arithmetic number, because the mean of its divisors is an integer number (1254495837).

Almost surely, 2^2508991673 is an apocalyptic number.

It is an amenable number.

2508991673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2508991673 is an equidigital number, since it uses as much as digits as its factorization.

2508991673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 2508991673 is about 50089.8360248863. The cubic root of 2508991673 is about 1358.8340051264.

The spelling of 2508991673 in words is "two billion, five hundred eight million, nine hundred ninety-one thousand, six hundred seventy-three".