2494735561 has 2 divisors, whose sum is σ = 2494735562. Its totient is φ = 2494735560.

The previous prime is 2494735543. The next prime is 2494735577. The reversal of 2494735561 is 1655374942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1800729225 + 694006336 = 42435^2 + 26344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2494735561 - 2¹⁹ = 2494211273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2494735541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1247367780 + 1247367781.

It is an arithmetic number, because the mean of its divisors is an integer number (1247367781).

Almost surely, 2^2494735561 is an apocalyptic number.

It is an amenable number.

2494735561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2494735561 is an equidigital number, since it uses as much as digits as its factorization.

2494735561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The square root of 2494735561 is about 49947.3278664635. The cubic root of 2494735561 is about 1356.2554797545.

The spelling of 2494735561 in words is "two billion, four hundred ninety-four million, seven hundred thirty-five thousand, five hundred sixty-one".