630372157 has 2 divisors, whose sum is σ = 630372158. Its totient is φ = 630372156.

The previous prime is 630372133. The next prime is 630372167. The reversal of 630372157 is 751273036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628705476 + 1666681 = 25074^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 630372157 - 2¹¹ = 630370109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630372167) 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, 315186078 + 315186079.

It is an arithmetic number, because the mean of its divisors is an integer number (315186079).

Almost surely, 2^630372157 is an apocalyptic number.

It is an amenable number.

630372157 is a deficient number, since it is larger than the sum of its proper divisors (1).

630372157 is an equidigital number, since it uses as much as digits as its factorization.

630372157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 630372157 is about 25107.2132463959. The cubic root of 630372157 is about 857.4306571267.

The spelling of 630372157 in words is "six hundred thirty million, three hundred seventy-two thousand, one hundred fifty-seven".