6648190309 has 8 divisors (see below), whose sum is σ = 6779427192. Its totient is φ = 6517168320.

The previous prime is 6648190291. The next prime is 6648190333. The reversal of 6648190309 is 9030918466.

It can be written as a sum of positive squares in 4 ways, for example, as 1928088100 + 4720102209 = 43910^2 + 68703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6648190309 - 2¹⁵ = 6648157541 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 (6648190379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9487 + ... + 115699.

It is an arithmetic number, because the mean of its divisors is an integer number (847428399).

Almost surely, 2^6648190309 is an apocalyptic number.

It is an amenable number.

6648190309 is a deficient number, since it is larger than the sum of its proper divisors (131236883).

6648190309 is a wasteful number, since it uses less digits than its factorization.

6648190309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107447.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6648190309 is about 81536.4354690589. The cubic root of 6648190309 is about 1880.3317572251.

The spelling of 6648190309 in words is "six billion, six hundred forty-eight million, one hundred ninety thousand, three hundred nine".