30198189 has 8 divisors (see below), whose sum is σ = 46016320. Its totient is φ = 17256096.

The previous prime is 30198143. The next prime is 30198191. The reversal of 30198189 is 98189103.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-30198189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30198199) 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, 718984 + ... + 719025.

It is an arithmetic number, because the mean of its divisors is an integer number (5752040).

Almost surely, 2^30198189 is an apocalyptic number.

It is an amenable number.

30198189 is a deficient number, since it is larger than the sum of its proper divisors (15818131).

30198189 is a wasteful number, since it uses less digits than its factorization.

30198189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438019.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 30198189 is about 5495.2878905477. The cubic root of 30198189 is about 311.4059929984.

The spelling of 30198189 in words is "thirty million, one hundred ninety-eight thousand, one hundred eighty-nine".