818257963 has 2 divisors, whose sum is σ = 818257964. Its totient is φ = 818257962.

The previous prime is 818257903. The next prime is 818257967. The reversal of 818257963 is 369752818.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 818257963 - 2¹⁷ = 818126891 is a prime.

It is not a weakly prime, because it can be changed into another prime (818257967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409128981 + 409128982.

It is an arithmetic number, because the mean of its divisors is an integer number (409128982).

Almost surely, 2^818257963 is an apocalyptic number.

818257963 is a deficient number, since it is larger than the sum of its proper divisors (1).

818257963 is an equidigital number, since it uses as much as digits as its factorization.

818257963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 818257963 is about 28605.2086690519. The cubic root of 818257963 is about 935.3268755212.

The spelling of 818257963 in words is "eight hundred eighteen million, two hundred fifty-seven thousand, nine hundred sixty-three".