3191633961 has 16 divisors (see below), whose sum is σ = 4321594368. Its totient is φ = 2094800400.

The previous prime is 3191633957. The next prime is 3191633981. The reversal of 3191633961 is 1693361913.

It is not a de Polignac number, because 3191633961 - 2² = 3191633957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3191633981) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 144546 + ... + 165156.

It is an arithmetic number, because the mean of its divisors is an integer number (270099648).

Almost surely, 2^3191633961 is an apocalyptic number.

It is an amenable number.

3191633961 is a deficient number, since it is larger than the sum of its proper divisors (1129960407).

3191633961 is a wasteful number, since it uses less digits than its factorization.

3191633961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21412.

The product of its digits is 78732, while the sum is 42.

The square root of 3191633961 is about 56494.5480643929. The cubic root of 3191633961 is about 1472.3272807312.

The spelling of 3191633961 in words is "three billion, one hundred ninety-one million, six hundred thirty-three thousand, nine hundred sixty-one".