2539490461 has 2 divisors, whose sum is σ = 2539490462. Its totient is φ = 2539490460.

The previous prime is 2539490423. The next prime is 2539490497. The reversal of 2539490461 is 1640949352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2427532900 + 111957561 = 49270^2 + 10581^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539490461 - 2⁹ = 2539489949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539490561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269745230 + 1269745231.

It is an arithmetic number, because the mean of its divisors is an integer number (1269745231).

Almost surely, 2^2539490461 is an apocalyptic number.

It is an amenable number.

2539490461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539490461 is an equidigital number, since it uses as much as digits as its factorization.

2539490461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2539490461 is about 50393.3573102646. The cubic root of 2539490461 is about 1364.3177474941.

The spelling of 2539490461 in words is "two billion, five hundred thirty-nine million, four hundred ninety thousand, four hundred sixty-one".