3181493653 has 16 divisors (see below), whose sum is σ = 3595003776. Its totient is φ = 2793510720.

The previous prime is 3181493647. The next prime is 3181493663. The reversal of 3181493653 is 3563941813.

It is a de Polignac number, because none of the positive numbers 2^k-3181493653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3181493603) 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, 24726 + ... + 83512.

It is an arithmetic number, because the mean of its divisors is an integer number (224687736).

Almost surely, 2^3181493653 is an apocalyptic number.

It is an amenable number.

3181493653 is a deficient number, since it is larger than the sum of its proper divisors (413510123).

3181493653 is a wasteful number, since it uses less digits than its factorization.

3181493653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59004.

The product of its digits is 233280, while the sum is 43.

The square root of 3181493653 is about 56404.7307679063. The cubic root of 3181493653 is about 1470.7663570030.

The spelling of 3181493653 in words is "three billion, one hundred eighty-one million, four hundred ninety-three thousand, six hundred fifty-three".