2490970891 has 2 divisors, whose sum is σ = 2490970892. Its totient is φ = 2490970890.

The previous prime is 2490970873. The next prime is 2490970901. The reversal of 2490970891 is 1980790942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2490970891 - 2¹³ = 2490962699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2490970841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245485445 + 1245485446.

It is an arithmetic number, because the mean of its divisors is an integer number (1245485446).

Almost surely, 2^2490970891 is an apocalyptic number.

2490970891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2490970891 is an equidigital number, since it uses as much as digits as its factorization.

2490970891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 2490970891 is about 49909.6272376382. The cubic root of 2490970891 is about 1355.5729191290.

The spelling of 2490970891 in words is "two billion, four hundred ninety million, nine hundred seventy thousand, eight hundred ninety-one".