4639189361818 has 16 divisors (see below), whose sum is σ = 7620939307584. Its totient is φ = 2100517288960.

The previous prime is 4639189361809. The next prime is 4639189361857. The reversal of 4639189361818 is 8181639819364.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410251630 + ... + 410262937.

It is an arithmetic number, because the mean of its divisors is an integer number (476308706724).

Almost surely, 2^{4639189361818} is an apocalyptic number.

4639189361818 is a deficient number, since it is larger than the sum of its proper divisors (2981749945766).

4639189361818 is a wasteful number, since it uses less digits than its factorization.

4639189361818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820514837.

The product of its digits is 53747712, while the sum is 67.

The spelling of 4639189361818 in words is "four trillion, six hundred thirty-nine billion, one hundred eighty-nine million, three hundred sixty-one thousand, eight hundred eighteen".