2645519497 has 2 divisors, whose sum is σ = 2645519498. Its totient is φ = 2645519496.

The previous prime is 2645519449. The next prime is 2645519533. The reversal of 2645519497 is 7949155462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001578121 + 643941376 = 44739^2 + 25376^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645519497 - 2²³ = 2637130889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2645519407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322759748 + 1322759749.

It is an arithmetic number, because the mean of its divisors is an integer number (1322759749).

Almost surely, 2^2645519497 is an apocalyptic number.

It is an amenable number.

2645519497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645519497 is an equidigital number, since it uses as much as digits as its factorization.

2645519497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The square root of 2645519497 is about 51434.6138023802. The cubic root of 2645519497 is about 1383.0471588730.

The spelling of 2645519497 in words is "two billion, six hundred forty-five million, five hundred nineteen thousand, four hundred ninety-seven".