349198189 has 4 divisors (see below), whose sum is σ = 357715260. Its totient is φ = 340681120.

The previous prime is 349198183. The next prime is 349198217. The reversal of 349198189 is 981891943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96864964 + 252333225 = 9842^2 + 15885^2 .

It is a cyclic number.

It is not a de Polignac number, because 349198189 - 2⁹ = 349197677 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 (349198183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4258474 + ... + 4258555.

It is an arithmetic number, because the mean of its divisors is an integer number (89428815).

Almost surely, 2^349198189 is an apocalyptic number.

It is an amenable number.

349198189 is a deficient number, since it is larger than the sum of its proper divisors (8517071).

349198189 is an equidigital number, since it uses as much as digits as its factorization.

349198189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517070.

The product of its digits is 559872, while the sum is 52.

The square root of 349198189 is about 18686.8453463927. The cubic root of 349198189 is about 704.1913091960.

The spelling of 349198189 in words is "three hundred forty-nine million, one hundred ninety-eight thousand, one hundred eighty-nine".