963625991 has 2 divisors, whose sum is σ = 963625992. Its totient is φ = 963625990.

The previous prime is 963625969. The next prime is 963625997. The reversal of 963625991 is 199526369.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 963625991 - 2¹⁰ = 963624967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (963625997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 481812995 + 481812996.

It is an arithmetic number, because the mean of its divisors is an integer number (481812996).

Almost surely, 2^963625991 is an apocalyptic number.

963625991 is a deficient number, since it is larger than the sum of its proper divisors (1).

963625991 is an equidigital number, since it uses as much as digits as its factorization.

963625991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 50.

The square root of 963625991 is about 31042.3257988186. The cubic root of 963625991 is about 987.7252780058.

The spelling of 963625991 in words is "nine hundred sixty-three million, six hundred twenty-five thousand, nine hundred ninety-one".