2645045399 has 2 divisors, whose sum is σ = 2645045400. Its totient is φ = 2645045398.

The previous prime is 2645045393. The next prime is 2645045449. The reversal of 2645045399 is 9935405462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2645045399 - 2¹⁶ = 2644979863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645045393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322522699 + 1322522700.

It is an arithmetic number, because the mean of its divisors is an integer number (1322522700).

Almost surely, 2^2645045399 is an apocalyptic number.

2645045399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645045399 is an equidigital number, since it uses as much as digits as its factorization.

2645045399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The square root of 2645045399 is about 51430.0048512539. The cubic root of 2645045399 is about 1382.9645362771.

The spelling of 2645045399 in words is "two billion, six hundred forty-five million, forty-five thousand, three hundred ninety-nine".