6549798898 has 16 divisors (see below), whose sum is σ = 9857277144. Its totient is φ = 3264053760.

The previous prime is 6549798859. The next prime is 6549798923. The reversal of 6549798898 is 8988979456.

It can be written as a sum of positive squares in 4 ways, for example, as 6184721449 + 365077449 = 78643^2 + 19107^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6549798898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344988 + ... + 1349848.

Almost surely, 2^6549798898 is an apocalyptic number.

6549798898 is a deficient number, since it is larger than the sum of its proper divisors (3307478246).

6549798898 is a wasteful number, since it uses less digits than its factorization.

6549798898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957.

The product of its digits is 313528320, while the sum is 73.

The square root of 6549798898 is about 80930.8278593516. The cubic root of 6549798898 is about 1871.0094826914.

The spelling of 6549798898 in words is "six billion, five hundred forty-nine million, seven hundred ninety-eight thousand, eight hundred ninety-eight".