6534187943 has 2 divisors, whose sum is σ = 6534187944. Its totient is φ = 6534187942.

The previous prime is 6534187883. The next prime is 6534188021. The reversal of 6534187943 is 3497814356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6534187943 - 2²⁶ = 6467079079 is a prime.

It is a super-2 number, since 2×6534187943² = 85391224148893142498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6534187891 and 6534187900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6534187243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3267093971 + 3267093972.

It is an arithmetic number, because the mean of its divisors is an integer number (3267093972).

Almost surely, 2^6534187943 is an apocalyptic number.

6534187943 is a deficient number, since it is larger than the sum of its proper divisors (1).

6534187943 is an equidigital number, since it uses as much as digits as its factorization.

6534187943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 6534187943 is about 80834.3240399770. The cubic root of 6534187943 is about 1869.5218298494.

The spelling of 6534187943 in words is "six billion, five hundred thirty-four million, one hundred eighty-seven thousand, nine hundred forty-three".