630518139 has 12 divisors (see below), whose sum is σ = 920138856. Its totient is φ = 416011392.

The previous prime is 630518137. The next prime is 630518177. The reversal of 630518139 is 931815036.

It is a happy number.

630518139 is a `hidden beast` number, since 6 + 3 + 0 + 518 + 139 = 666.

It is not a de Polignac number, because 630518139 - 2¹ = 630518137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630518137) 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 in 11 ways as a sum of consecutive naturals, for example, 360249 + ... + 361994.

It is an arithmetic number, because the mean of its divisors is an integer number (76678238).

Almost surely, 2^630518139 is an apocalyptic number.

630518139 is a deficient number, since it is larger than the sum of its proper divisors (289620717).

630518139 is a wasteful number, since it uses less digits than its factorization.

630518139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722346 (or 722343 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 630518139 is about 25110.1202506081. The cubic root of 630518139 is about 857.4968401372.

The spelling of 630518139 in words is "six hundred thirty million, five hundred eighteen thousand, one hundred thirty-nine".