2190844909 has 8 divisors (see below), whose sum is σ = 2390718528. Its totient is φ = 1991088960.

The previous prime is 2190844867. The next prime is 2190844919. The reversal of 2190844909 is 9094480912.

2190844909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2190844909 - 2¹³ = 2190836717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190844919) 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, 12069 + ... + 67285.

It is an arithmetic number, because the mean of its divisors is an integer number (298839816).

Almost surely, 2^2190844909 is an apocalyptic number.

It is an amenable number.

2190844909 is a deficient number, since it is larger than the sum of its proper divisors (199873619).

2190844909 is a wasteful number, since it uses less digits than its factorization.

2190844909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58835.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 2190844909 is about 46806.4622568295. The cubic root of 2190844909 is about 1298.7848426085.

The spelling of 2190844909 in words is "two billion, one hundred ninety million, eight hundred forty-four thousand, nine hundred nine".