3019172809 has 9 divisors (see below), whose sum is σ = 3157470183. Its totient is φ = 2886695592.

The previous prime is 3019172791. The next prime is 3019172911. The reversal of 3019172809 is 9082719103.

The square root of 3019172809 is 54947.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 686282809 + 2332890000 = 26197^2 + 48300^2 .

It is not a de Polignac number, because 3019172809 - 2⁵ = 3019172777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3019172209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1262587 + ... + 1264975.

Almost surely, 2^3019172809 is an apocalyptic number.

3019172809 is the 54947-th square number.

3019172809 is the 27474-th centered octagonal number.

It is an amenable number.

3019172809 is a deficient number, since it is larger than the sum of its proper divisors (138297374).

3019172809 is an frugal number, since it uses more digits than its factorization.

3019172809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The cubic root of 3019172809 is about 1445.3154899150.

The spelling of 3019172809 in words is "three billion, nineteen million, one hundred seventy-two thousand, eight hundred nine".