3691666742 has 16 divisors (see below), whose sum is σ = 5552662752. Its totient is φ = 1840787520.

The previous prime is 3691666733. The next prime is 3691666777. The reversal of 3691666742 is 2476661963.

3691666742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 1541498 + ... + 1543890.

It is an arithmetic number, because the mean of its divisors is an integer number (347041422).

Almost surely, 2^3691666742 is an apocalyptic number.

3691666742 is a deficient number, since it is larger than the sum of its proper divisors (1860996010).

3691666742 is a wasteful number, since it uses less digits than its factorization.

3691666742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183.

The product of its digits is 1959552, while the sum is 50.

The square root of 3691666742 is about 60759.0877317953. The cubic root of 3691666742 is about 1545.5183399903.

The spelling of 3691666742 in words is "three billion, six hundred ninety-one million, six hundred sixty-six thousand, seven hundred forty-two".