1252613863 has 2 divisors, whose sum is σ = 1252613864. Its totient is φ = 1252613862.

The previous prime is 1252613861. The next prime is 1252613881. The reversal of 1252613863 is 3683162521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252613863 - 2¹ = 1252613861 is a prime.

Together with 1252613861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252613861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626306931 + 626306932.

It is an arithmetic number, because the mean of its divisors is an integer number (626306932).

Almost surely, 2^1252613863 is an apocalyptic number.

1252613863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252613863 is an equidigital number, since it uses as much as digits as its factorization.

1252613863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 1252613863 is about 35392.2853599481. The cubic root of 1252613863 is about 1077.9676752056.

The spelling of 1252613863 in words is "one billion, two hundred fifty-two million, six hundred thirteen thousand, eight hundred sixty-three".