630189400 has 24 divisors (see below), whose sum is σ = 1465190820. Its totient is φ = 252075680.

The previous prime is 630189389. The next prime is 630189403. The reversal of 630189400 is 4981036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630189403) 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 5 ways as a sum of consecutive naturals, for example, 1575274 + ... + 1575673.

Almost surely, 2^630189400 is an apocalyptic number.

It is an amenable number.

630189400 is an abundant number, since it is smaller than the sum of its proper divisors (835001420).

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

630189400 is a wasteful number, since it uses less digits than its factorization.

630189400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150963 (or 3150954 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 630189400 is about 25103.5734508058. The cubic root of 630189400 is about 857.3477872437.

The spelling of 630189400 in words is "six hundred thirty million, one hundred eighty-nine thousand, four hundred".