2492946581 has 2 divisors, whose sum is σ = 2492946582. Its totient is φ = 2492946580.

The previous prime is 2492946557. The next prime is 2492946587. The reversal of 2492946581 is 1856492942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2196796900 + 296149681 = 46870^2 + 17209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492946581 - 2¹⁰ = 2492945557 is a prime.

It is a super-2 number, since 2×2492946581² = 12429565311439179122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2492946587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246473290 + 1246473291.

It is an arithmetic number, because the mean of its divisors is an integer number (1246473291).

Almost surely, 2^2492946581 is an apocalyptic number.

It is an amenable number.

2492946581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2492946581 is an equidigital number, since it uses as much as digits as its factorization.

2492946581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 2492946581 is about 49929.4159889739. The cubic root of 2492946581 is about 1355.9312110332.

The spelling of 2492946581 in words is "two billion, four hundred ninety-two million, nine hundred forty-six thousand, five hundred eighty-one".