1254442663 has 2 divisors, whose sum is σ = 1254442664. Its totient is φ = 1254442662.

The previous prime is 1254442649. The next prime is 1254442687. The reversal of 1254442663 is 3662444521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254442663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254449663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627221331 + 627221332.

It is an arithmetic number, because the mean of its divisors is an integer number (627221332).

Almost surely, 2^1254442663 is an apocalyptic number.

1254442663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254442663 is an equidigital number, since it uses as much as digits as its factorization.

1254442663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 37.

The square root of 1254442663 is about 35418.1120756034. The cubic root of 1254442663 is about 1078.4920263830.

The spelling of 1254442663 in words is "one billion, two hundred fifty-four million, four hundred forty-two thousand, six hundred sixty-three".