630045193 has 4 divisors (see below), whose sum is σ = 630115200. Its totient is φ = 629975188.

The previous prime is 630045137. The next prime is 630045389. The reversal of 630045193 is 391540036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630045193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630045103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19093 + ... + 40306.

It is an arithmetic number, because the mean of its divisors is an integer number (157528800).

Almost surely, 2^630045193 is an apocalyptic number.

It is an amenable number.

630045193 is a deficient number, since it is larger than the sum of its proper divisors (70007).

630045193 is a wasteful number, since it uses less digits than its factorization.

630045193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70006.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 630045193 is about 25100.7010459867. The cubic root of 630045193 is about 857.2823862790.

The spelling of 630045193 in words is "six hundred thirty million, forty-five thousand, one hundred ninety-three".