7893861253 has 2 divisors, whose sum is σ = 7893861254. Its totient is φ = 7893861252.

The previous prime is 7893861229. The next prime is 7893861271. The reversal of 7893861253 is 3521683987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6846238564 + 1047622689 = 82742^2 + 32367^2 .

It is a cyclic number.

It is not a de Polignac number, because 7893861253 - 2¹⁷ = 7893730181 is a prime.

It is a super-2 number, since 2×7893861253² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7893861253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7893861223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3946930626 + 3946930627.

It is an arithmetic number, because the mean of its divisors is an integer number (3946930627).

Almost surely, 2^7893861253 is an apocalyptic number.

It is an amenable number.

7893861253 is a deficient number, since it is larger than the sum of its proper divisors (1).

7893861253 is an equidigital number, since it uses as much as digits as its factorization.

7893861253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 7893861253 is about 88847.4043121126. The cubic root of 7893861253 is about 1991.1156974378.

The spelling of 7893861253 in words is "seven billion, eight hundred ninety-three million, eight hundred sixty-one thousand, two hundred fifty-three".