8643907453 has 2 divisors, whose sum is σ = 8643907454. Its totient is φ = 8643907452.

The previous prime is 8643907439. The next prime is 8643907457. The reversal of 8643907453 is 3547093468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8459952484 + 183954969 = 91978^2 + 13563^2 .

It is a cyclic number.

It is not a de Polignac number, because 8643907453 - 2⁵ = 8643907421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8643907397 and 8643907406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8643907457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321953726 + 4321953727.

It is an arithmetic number, because the mean of its divisors is an integer number (4321953727).

Almost surely, 2^8643907453 is an apocalyptic number.

It is an amenable number.

8643907453 is a deficient number, since it is larger than the sum of its proper divisors (1).

8643907453 is an equidigital number, since it uses as much as digits as its factorization.

8643907453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The square root of 8643907453 is about 92972.6166836236. The cubic root of 8643907453 is about 2052.2804250691.

The spelling of 8643907453 in words is "eight billion, six hundred forty-three million, nine hundred seven thousand, four hundred fifty-three".