2193545189 has 4 divisors (see below), whose sum is σ = 2392958400. Its totient is φ = 1994131980.

The previous prime is 2193545183. The next prime is 2193545191. The reversal of 2193545189 is 9815453912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2193545189 - 2¹⁶ = 2193479653 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 (2193545183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99706589 + ... + 99706610.

It is an arithmetic number, because the mean of its divisors is an integer number (598239600).

Almost surely, 2^2193545189 is an apocalyptic number.

It is an amenable number.

2193545189 is a deficient number, since it is larger than the sum of its proper divisors (199413211).

2193545189 is a wasteful number, since it uses less digits than its factorization.

2193545189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199413210.

The product of its digits is 388800, while the sum is 47.

The square root of 2193545189 is about 46835.2985364671. The cubic root of 2193545189 is about 1299.3182202179.

The spelling of 2193545189 in words is "two billion, one hundred ninety-three million, five hundred forty-five thousand, one hundred eighty-nine".