4193640663 has 4 divisors (see below), whose sum is σ = 5591520888. Its totient is φ = 2795760440.

The previous prime is 4193640641. The next prime is 4193640713. The reversal of 4193640663 is 3660463914.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4193640663 - 2¹² = 4193636567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4193640263) 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, 698940108 + ... + 698940113.

It is an arithmetic number, because the mean of its divisors is an integer number (1397880222).

Almost surely, 2^4193640663 is an apocalyptic number.

4193640663 is a deficient number, since it is larger than the sum of its proper divisors (1397880225).

4193640663 is a wasteful number, since it uses less digits than its factorization.

4193640663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397880224.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 4193640663 is about 64758.3250478269. The cubic root of 4193640663 is about 1612.6139222680.

The spelling of 4193640663 in words is "four billion, one hundred ninety-three million, six hundred forty thousand, six hundred sixty-three".