2190809163 has 8 divisors (see below), whose sum is σ = 2942094400. Its totient is φ = 1450031688.

The previous prime is 2190809149. The next prime is 2190809171. The reversal of 2190809163 is 3619080912.

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

It is not a de Polignac number, because 2190809163 - 2¹³ = 2190800971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2190809143) 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, 2626453 + ... + 2627286.

It is an arithmetic number, because the mean of its divisors is an integer number (367761800).

Almost surely, 2^2190809163 is an apocalyptic number.

2190809163 is a deficient number, since it is larger than the sum of its proper divisors (751285237).

2190809163 is a wasteful number, since it uses less digits than its factorization.

2190809163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253881.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 2190809163 is about 46806.0804062891. The cubic root of 2190809163 is about 1298.7777788778. Note that the first 5 decimals are identical.

The spelling of 2190809163 in words is "two billion, one hundred ninety million, eight hundred nine thousand, one hundred sixty-three".