3183981943 has 16 divisors (see below), whose sum is σ = 3461654880. Its totient is φ = 2918882304.

The previous prime is 3183981917. The next prime is 3183981947. The reversal of 3183981943 is 3491893813.

It is a cyclic number.

It is not a de Polignac number, because 3183981943 - 2¹⁷ = 3183850871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3183981947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51855 + ... + 95167.

It is an arithmetic number, because the mean of its divisors is an integer number (216353430).

Almost surely, 2^3183981943 is an apocalyptic number.

3183981943 is a deficient number, since it is larger than the sum of its proper divisors (277672937).

3183981943 is a wasteful number, since it uses less digits than its factorization.

3183981943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43458.

The product of its digits is 559872, while the sum is 49.

The square root of 3183981943 is about 56426.7839150877. The cubic root of 3183981943 is about 1471.1496926239.

The spelling of 3183981943 in words is "three billion, one hundred eighty-three million, nine hundred eighty-one thousand, nine hundred forty-three".