3721766243 has 16 divisors (see below), whose sum is σ = 4156336800. Its totient is φ = 3308954880.

The previous prime is 3721766239. The next prime is 3721766263. The reversal of 3721766243 is 3426671273.

It is a cyclic number.

It is not a de Polignac number, because 3721766243 - 2² = 3721766239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3721766243.

It is not an unprimeable number, because it can be changed into a prime (3721766233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146183 + ... + 169743.

It is an arithmetic number, because the mean of its divisors is an integer number (259771050).

Almost surely, 2^3721766243 is an apocalyptic number.

3721766243 is a deficient number, since it is larger than the sum of its proper divisors (434570557).

3721766243 is a wasteful number, since it uses less digits than its factorization.

3721766243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24022.

The product of its digits is 254016, while the sum is 41.

The square root of 3721766243 is about 61006.2803570255. The cubic root of 3721766243 is about 1549.7073666078.

The spelling of 3721766243 in words is "three billion, seven hundred twenty-one million, seven hundred sixty-six thousand, two hundred forty-three".