4045994690 has 16 divisors (see below), whose sum is σ = 7311132792. Its totient is φ = 1612099584.

The previous prime is 4045994651. The next prime is 4045994731. The reversal of 4045994690 is 964995404.

4045994690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3515659849 + 530334841 = 59293^2 + 23029^2 .

It is a super-2 number, since 2×4045994690² = 32740146063016392200, which contains 22 as substring.

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, 784589 + ... + 789728.

Almost surely, 2^4045994690 is an apocalyptic number.

4045994690 is a deficient number, since it is larger than the sum of its proper divisors (3265138102).

4045994690 is a wasteful number, since it uses less digits than its factorization.

4045994690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574581.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 4045994690 is about 63608.1338352258. The cubic root of 4045994690 is about 1593.4622141605.

The spelling of 4045994690 in words is "four billion, forty-five million, nine hundred ninety-four thousand, six hundred ninety".