17930189 has 4 divisors (see below), whose sum is σ = 18984924. Its totient is φ = 16875456.

The previous prime is 17930153. The next prime is 17930191. The reversal of 17930189 is 98103971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98103971 = 7 ⋅14014853.

It can be written as a sum of positive squares in 2 ways, for example, as 6165289 + 11764900 = 2483^2 + 3430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17930189 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 (17930389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527342 + ... + 527375.

It is an arithmetic number, because the mean of its divisors is an integer number (4746231).

Almost surely, 2^17930189 is an apocalyptic number.

It is an amenable number.

17930189 is a deficient number, since it is larger than the sum of its proper divisors (1054735).

17930189 is a wasteful number, since it uses less digits than its factorization.

17930189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054734.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 17930189 is about 4234.4053891898. The cubic root of 17930189 is about 261.7348919875.

The spelling of 17930189 in words is "seventeen million, nine hundred thirty thousand, one hundred eighty-nine".