6541831489 has 8 divisors (see below), whose sum is σ = 6955390728. Its totient is φ = 6131466240.

The previous prime is 6541831487. The next prime is 6541831519. The reversal of 6541831489 is 9841381456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 972940864 + 5568890625 = 31192^2 + 74625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6541831489 - 2¹ = 6541831487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541831487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794272 + ... + 802465.

It is an arithmetic number, because the mean of its divisors is an integer number (869423841).

Almost surely, 2^6541831489 is an apocalyptic number.

It is an amenable number.

6541831489 is a deficient number, since it is larger than the sum of its proper divisors (413559239).

6541831489 is a wasteful number, since it uses less digits than its factorization.

6541831489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596995.

The product of its digits is 829440, while the sum is 49.

The square root of 6541831489 is about 80881.5893080743. The cubic root of 6541831489 is about 1870.2505206418.

The spelling of 6541831489 in words is "six billion, five hundred forty-one million, eight hundred thirty-one thousand, four hundred eighty-nine".