1251904763 has 2 divisors, whose sum is σ = 1251904764. Its totient is φ = 1251904762.

The previous prime is 1251904747. The next prime is 1251904811. The reversal of 1251904763 is 3674091521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251904763 - 2⁴ = 1251904747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251904733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625952381 + 625952382.

It is an arithmetic number, because the mean of its divisors is an integer number (625952382).

Almost surely, 2^1251904763 is an apocalyptic number.

1251904763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251904763 is an equidigital number, since it uses as much as digits as its factorization.

1251904763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1251904763 is about 35382.2662219367. The cubic root of 1251904763 is about 1077.7642256603.

The spelling of 1251904763 in words is "one billion, two hundred fifty-one million, nine hundred four thousand, seven hundred sixty-three".