1285952663 has 2 divisors, whose sum is σ = 1285952664. Its totient is φ = 1285952662.

The previous prime is 1285952653. The next prime is 1285952669. The reversal of 1285952663 is 3662595821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285952663 - 2²⁴ = 1269175447 is a prime.

It is a super-3 number, since 3×1285952663³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285952669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642976331 + 642976332.

It is an arithmetic number, because the mean of its divisors is an integer number (642976332).

Almost surely, 2^1285952663 is an apocalyptic number.

1285952663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285952663 is an equidigital number, since it uses as much as digits as its factorization.

1285952663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 47.

The square root of 1285952663 is about 35860.1821384108. The cubic root of 1285952663 is about 1087.4475706084.

The spelling of 1285952663 in words is "one billion, two hundred eighty-five million, nine hundred fifty-two thousand, six hundred sixty-three".