6549889492 has 12 divisors (see below), whose sum is σ = 11960667936. Its totient is φ = 3132555800.

The previous prime is 6549889481. The next prime is 6549889499. The reversal of 6549889492 is 2949889456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6549889499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35597134 + ... + 35597317.

It is an arithmetic number, because the mean of its divisors is an integer number (996722328).

Almost surely, 2^6549889492 is an apocalyptic number.

It is an amenable number.

6549889492 is a deficient number, since it is larger than the sum of its proper divisors (5410778444).

6549889492 is a wasteful number, since it uses less digits than its factorization.

6549889492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71194478 (or 71194476 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 64.

The square root of 6549889492 is about 80931.3875576096. The cubic root of 6549889492 is about 1871.0181089844.

The spelling of 6549889492 in words is "six billion, five hundred forty-nine million, eight hundred eighty-nine thousand, four hundred ninety-two".