630192961 has 2 divisors, whose sum is σ = 630192962. Its totient is φ = 630192960.

The previous prime is 630192929. The next prime is 630192989. The reversal of 630192961 is 169291036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610337025 + 19855936 = 24705^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 630192961 - 2⁵ = 630192929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 630192961.

It is not a weakly prime, because it can be changed into another prime (630192461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315096480 + 315096481.

It is an arithmetic number, because the mean of its divisors is an integer number (315096481).

Almost surely, 2^630192961 is an apocalyptic number.

It is an amenable number.

630192961 is a deficient number, since it is larger than the sum of its proper divisors (1).

630192961 is an equidigital number, since it uses as much as digits as its factorization.

630192961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 630192961 is about 25103.6443768629. The cubic root of 630192961 is about 857.3494021073.

The spelling of 630192961 in words is "six hundred thirty million, one hundred ninety-two thousand, nine hundred sixty-one".