3891143043 has 40 divisors (see below), whose sum is σ = 5930694000. Its totient is φ = 2541730752.

The previous prime is 3891143021. The next prime is 3891143051. The reversal of 3891143043 is 3403411983.

It is not a de Polignac number, because 3891143043 - 2⁶ = 3891142979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3891142989 and 3891143007.

It is not an unprimeable number, because it can be changed into a prime (3891143843) 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 39 ways as a sum of consecutive naturals, for example, 1666705 + ... + 1669037.

It is an arithmetic number, because the mean of its divisors is an integer number (148267350).

Almost surely, 2^3891143043 is an apocalyptic number.

3891143043 is a deficient number, since it is larger than the sum of its proper divisors (2039550957).

3891143043 is a wasteful number, since it uses less digits than its factorization.

3891143043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3891143043 is about 62379.0272687864. The cubic root of 3891143043 is about 1572.8684416836.

The spelling of 3891143043 in words is "three billion, eight hundred ninety-one million, one hundred forty-three thousand, forty-three".