6547439541 has 4 divisors (see below), whose sum is σ = 8729919392. Its totient is φ = 4364959692.

The previous prime is 6547439399. The next prime is 6547439557. The reversal of 6547439541 is 1459347456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6547439541 - 2¹⁰ = 6547438517 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 (6547439581) 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 3 ways as a sum of consecutive naturals, for example, 1091239921 + ... + 1091239926.

It is an arithmetic number, because the mean of its divisors is an integer number (2182479848).

Almost surely, 2^6547439541 is an apocalyptic number.

It is an amenable number.

6547439541 is a deficient number, since it is larger than the sum of its proper divisors (2182479851).

6547439541 is a wasteful number, since it uses less digits than its factorization.

6547439541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182479850.

The product of its digits is 1814400, while the sum is 48.

The square root of 6547439541 is about 80916.2501664530. The cubic root of 6547439541 is about 1870.7847984662.

The spelling of 6547439541 in words is "six billion, five hundred forty-seven million, four hundred thirty-nine thousand, five hundred forty-one".