3936641494 has 12 divisors (see below), whose sum is σ = 5961538764. Its totient is φ = 1949470592.

The previous prime is 3936641477. The next prime is 3936641507. The reversal of 3936641494 is 4941466393.

It is a happy number.

3936641494 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 5 ways as a sum of consecutive naturals, for example, 915702 + ... + 919990.

It is an arithmetic number, because the mean of its divisors is an integer number (496794897).

Almost surely, 2^3936641494 is an apocalyptic number.

3936641494 is a deficient number, since it is larger than the sum of its proper divisors (2024897270).

3936641494 is an frugal number, since it uses more digits than its factorization.

3936641494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8687 (or 4398 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 49.

The square root of 3936641494 is about 62742.6608775879. The cubic root of 3936641494 is about 1578.9751263609.

The spelling of 3936641494 in words is "three billion, nine hundred thirty-six million, six hundred forty-one thousand, four hundred ninety-four".