630189401 has 8 divisors (see below), whose sum is σ = 653128320. Its totient is φ = 607331088.

The previous prime is 630189389. The next prime is 630189403. The reversal of 630189401 is 104981036.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630189401 is a prime.

It is a super-2 number, since 2×630189401² = 794277362265477602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630189403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001 + ... + 35726.

It is an arithmetic number, because the mean of its divisors is an integer number (81641040).

Almost surely, 2^630189401 is an apocalyptic number.

It is an amenable number.

630189401 is a deficient number, since it is larger than the sum of its proper divisors (22938919).

630189401 is a wasteful number, since it uses less digits than its factorization.

630189401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40303.

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

The square root of 630189401 is about 25103.5734707232. The cubic root of 630189401 is about 857.3477876972.

The spelling of 630189401 in words is "six hundred thirty million, one hundred eighty-nine thousand, four hundred one".