5813817951449 has 2 divisors, whose sum is σ = 5813817951450. Its totient is φ = 5813817951448.

The previous prime is 5813817951401. The next prime is 5813817951457. The reversal of 5813817951449 is 9441597183185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3975876481600 + 1837941469849 = 1993960^2 + 1355707^2 .

It is a cyclic number.

It is not a de Polignac number, because 5813817951449 - 2²⁸ = 5813549515993 is a prime.

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 (5813817951479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2906908975724 + 2906908975725.

It is an arithmetic number, because the mean of its divisors is an integer number (2906908975725).

Almost surely, 2^{5813817951449} is an apocalyptic number.

It is an amenable number.

5813817951449 is a deficient number, since it is larger than the sum of its proper divisors (1).

5813817951449 is an equidigital number, since it uses as much as digits as its factorization.

5813817951449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43545600, while the sum is 65.

The spelling of 5813817951449 in words is "five trillion, eight hundred thirteen billion, eight hundred seventeen million, nine hundred fifty-one thousand, four hundred forty-nine".