4491601864 has 16 divisors (see below), whose sum is σ = 8431052400. Its totient is φ = 2243321232.

The previous prime is 4491601789. The next prime is 4491601879. The reversal of 4491601864 is 4681061944.

It is a self number, because there is not a number n which added to its sum of digits gives 4491601864.

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, 302254 + ... + 316765.

It is an arithmetic number, because the mean of its divisors is an integer number (526940775).

Almost surely, 2^4491601864 is an apocalyptic number.

It is an amenable number.

4491601864 is a deficient number, since it is larger than the sum of its proper divisors (3939450536).

4491601864 is a wasteful number, since it uses less digits than its factorization.

4491601864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619932 (or 619928 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 4491601864 is about 67019.4140827865. The cubic root of 4491601864 is about 1649.9359465799.

The spelling of 4491601864 in words is "four billion, four hundred ninety-one million, six hundred one thousand, eight hundred sixty-four".