2520130649 has 2 divisors, whose sum is σ = 2520130650. Its totient is φ = 2520130648.

The previous prime is 2520130603. The next prime is 2520130667. The reversal of 2520130649 is 9460310252.

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., 2424873049 + 95257600 = 49243^2 + 9760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520130649 is a prime.

It is a super-2 number, since 2×2520130649² = 12702116976058322402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2520130699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260065324 + 1260065325.

It is an arithmetic number, because the mean of its divisors is an integer number (1260065325).

Almost surely, 2^2520130649 is an apocalyptic number.

It is an amenable number.

2520130649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520130649 is an equidigital number, since it uses as much as digits as its factorization.

2520130649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2520130649 is about 50200.9028703668. The cubic root of 2520130649 is about 1360.8419399227.

The spelling of 2520130649 in words is "two billion, five hundred twenty million, one hundred thirty thousand, six hundred forty-nine".