221849193 has 8 divisors (see below), whose sum is σ = 295923456. Its totient is φ = 147837200.

The previous prime is 221849161. The next prime is 221849197. The reversal of 221849193 is 391948122.

221849193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221849193 - 2⁵ = 221849161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221849197) 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, 6498 + ... + 22043.

It is an arithmetic number, because the mean of its divisors is an integer number (36990432).

Almost surely, 2^221849193 is an apocalyptic number.

It is an amenable number.

221849193 is a deficient number, since it is larger than the sum of its proper divisors (74074263).

221849193 is a wasteful number, since it uses less digits than its factorization.

221849193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31135.

The product of its digits is 31104, while the sum is 39.

The square root of 221849193 is about 14894.6028144426. The cubic root of 221849193 is about 605.3677549193.

The spelling of 221849193 in words is "two hundred twenty-one million, eight hundred forty-nine thousand, one hundred ninety-three".