632649189 has 8 divisors (see below), whose sum is σ = 851271520. Its totient is φ = 417896496.

The previous prime is 632649179. The next prime is 632649197. The reversal of 632649189 is 981946236.

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

It is a de Polignac number, because none of the positive numbers 2^k-632649189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632649139) 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, 967027 + ... + 967680.

It is an arithmetic number, because the mean of its divisors is an integer number (106408940).

Almost surely, 2^632649189 is an apocalyptic number.

It is an amenable number.

632649189 is a deficient number, since it is larger than the sum of its proper divisors (218622331).

632649189 is a wasteful number, since it uses less digits than its factorization.

632649189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934819.

The product of its digits is 559872, while the sum is 48.

The square root of 632649189 is about 25152.5185418876. The cubic root of 632649189 is about 858.4618209721.

The spelling of 632649189 in words is "six hundred thirty-two million, six hundred forty-nine thousand, one hundred eighty-nine".