630189140 has 48 divisors (see below), whose sum is σ = 1564617600. Its totient is φ = 208612992.

The previous prime is 630189107. The next prime is 630189149. The reversal of 630189140 is 41981036.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 630189097 and 630189106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630189149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73550 + ... + 81669.

It is an arithmetic number, because the mean of its divisors is an integer number (32596200).

Almost surely, 2^630189140 is an apocalyptic number.

It is an amenable number.

630189140 is an abundant number, since it is smaller than the sum of its proper divisors (934428460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630189140 is a wasteful number, since it uses less digits than its factorization.

630189140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155264 (or 155262 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 630189140 is about 25103.5682722596. The cubic root of 630189140 is about 857.3476693372.

The spelling of 630189140 in words is "six hundred thirty million, one hundred eighty-nine thousand, one hundred forty".