6549189636 has 48 divisors (see below), whose sum is σ = 16705059840. Its totient is φ = 1980508320.

The previous prime is 6549189631. The next prime is 6549189709. The reversal of 6549189636 is 6369819456.

It is not an unprimeable number, because it can be changed into a prime (6549189631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13345 + ... + 115223.

It is an arithmetic number, because the mean of its divisors is an integer number (348022080).

Almost surely, 2^6549189636 is an apocalyptic number.

6549189636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6549189636 is an abundant number, since it is smaller than the sum of its proper divisors (10155870204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6549189636 is a wasteful number, since it uses less digits than its factorization.

6549189636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102384 (or 102382 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The square root of 6549189636 is about 80927.0636808231. The cubic root of 6549189636 is about 1870.9514671531.

The spelling of 6549189636 in words is "six billion, five hundred forty-nine million, one hundred eighty-nine thousand, six hundred thirty-six".