630172951 has 2 divisors, whose sum is σ = 630172952. Its totient is φ = 630172950.

The previous prime is 630172931. The next prime is 630172957. The reversal of 630172951 is 159271036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630172951 - 2⁵ = 630172919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630172957) 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, 315086475 + 315086476.

It is an arithmetic number, because the mean of its divisors is an integer number (315086476).

Almost surely, 2^630172951 is an apocalyptic number.

630172951 is a deficient number, since it is larger than the sum of its proper divisors (1).

630172951 is an equidigital number, since it uses as much as digits as its factorization.

630172951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 630172951 is about 25103.2458259883. The cubic root of 630172951 is about 857.3403277739.

The spelling of 630172951 in words is "six hundred thirty million, one hundred seventy-two thousand, nine hundred fifty-one".