3931227636 has 24 divisors (see below), whose sum is σ = 10483273920. Its totient is φ = 1123207872.

The previous prime is 3931227593. The next prime is 3931227653. The reversal of 3931227636 is 6367221393.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23400081 + ... + 23400248.

It is an arithmetic number, because the mean of its divisors is an integer number (436803080).

Almost surely, 2^3931227636 is an apocalyptic number.

It is an amenable number.

3931227636 is an abundant number, since it is smaller than the sum of its proper divisors (6552046284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3931227636 is a wasteful number, since it uses less digits than its factorization.

3931227636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46800343 (or 46800341 counting only the distinct ones).

The product of its digits is 244944, while the sum is 42.

The square root of 3931227636 is about 62699.5026774535. The cubic root of 3931227636 is about 1578.2509668772.

The spelling of 3931227636 in words is "three billion, nine hundred thirty-one million, two hundred twenty-seven thousand, six hundred thirty-six".