3993418646 has 8 divisors (see below), whose sum is σ = 6845860560. Its totient is φ = 1711465128.

The previous prime is 3993418601. The next prime is 3993418673. The reversal of 3993418646 is 6468143993.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142622081 + ... + 142622108.

It is an arithmetic number, because the mean of its divisors is an integer number (855732570).

Almost surely, 2^3993418646 is an apocalyptic number.

3993418646 is a deficient number, since it is larger than the sum of its proper divisors (2852441914).

3993418646 is a wasteful number, since it uses less digits than its factorization.

3993418646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285244198.

The product of its digits is 3359232, while the sum is 53.

The square root of 3993418646 is about 63193.5016121120. The cubic root of 3993418646 is about 1586.5299700299.

The spelling of 3993418646 in words is "three billion, nine hundred ninety-three million, four hundred eighteen thousand, six hundred forty-six".