630109171 has 2 divisors, whose sum is σ = 630109172. Its totient is φ = 630109170.

The previous prime is 630109159. The next prime is 630109241. The reversal of 630109171 is 171901036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630109171 - 2¹¹ = 630107123 is a prime.

It is not a weakly prime, because it can be changed into another prime (630139171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315054585 + 315054586.

It is an arithmetic number, because the mean of its divisors is an integer number (315054586).

Almost surely, 2^630109171 is an apocalyptic number.

630109171 is a deficient number, since it is larger than the sum of its proper divisors (1).

630109171 is an equidigital number, since it uses as much as digits as its factorization.

630109171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 630109171 is about 25101.9754401920. The cubic root of 630109171 is about 857.3114029045.

The spelling of 630109171 in words is "six hundred thirty million, one hundred nine thousand, one hundred seventy-one".