4045994818 has 4 divisors (see below), whose sum is σ = 6068992230. Its totient is φ = 2022997408.

The previous prime is 4045994789. The next prime is 4045994831. The reversal of 4045994818 is 8184995404.

4045994818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 3370150809 + 675844009 = 58053^2 + 25997^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011498703 + ... + 1011498706.

Almost surely, 2^4045994818 is an apocalyptic number.

4045994818 is a deficient number, since it is larger than the sum of its proper divisors (2022997412).

4045994818 is a wasteful number, since it uses less digits than its factorization.

4045994818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022997411.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 4045994818 is about 63608.1348413864. The cubic root of 4045994818 is about 1593.4622309642.

The spelling of 4045994818 in words is "four billion, forty-five million, nine hundred ninety-four thousand, eight hundred eighteen".