6549869320 has 32 divisors (see below), whose sum is σ = 15015271320. Its totient is φ = 2570513920.

The previous prime is 6549869309. The next prime is 6549869323. The reversal of 6549869320 is 239689456.

It can be written as a sum of positive squares in 4 ways, for example, as 4866736644 + 1683132676 = 69762^2 + 41026^2 .

It is not an unprimeable number, because it can be changed into a prime (6549869323) 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 7 ways as a sum of consecutive naturals, for example, 1542661 + ... + 1546900.

Almost surely, 2^6549869320 is an apocalyptic number.

It is an amenable number.

6549869320 is an abundant number, since it is smaller than the sum of its proper divisors (8465402000).

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

6549869320 is a wasteful number, since it uses less digits than its factorization.

6549869320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089625 (or 3089621 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The square root of 6549869320 is about 80931.2629334301. The cubic root of 6549869320 is about 1871.0161882285.

The spelling of 6549869320 in words is "six billion, five hundred forty-nine million, eight hundred sixty-nine thousand, three hundred twenty".