228849191 has 4 divisors (see below), whose sum is σ = 228882984. Its totient is φ = 228815400.

The previous prime is 228849169. The next prime is 228849199. The reversal of 228849191 is 191948822.

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

It is a cyclic number.

It is not a de Polignac number, because 228849191 - 2¹⁰ = 228848167 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 (228849199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840 + ... + 21581.

It is an arithmetic number, because the mean of its divisors is an integer number (57220746).

Almost surely, 2^228849191 is an apocalyptic number.

228849191 is a deficient number, since it is larger than the sum of its proper divisors (33793).

228849191 is an equidigital number, since it uses as much as digits as its factorization.

228849191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33792.

The product of its digits is 82944, while the sum is 44.

The square root of 228849191 is about 15127.7622601626. The cubic root of 228849191 is about 611.6689858112.

The spelling of 228849191 in words is "two hundred twenty-eight million, eight hundred forty-nine thousand, one hundred ninety-one".