189228793 has 6 divisors (see below), whose sum is σ = 204904734. Its totient is φ = 174672576.

The previous prime is 189228791. The next prime is 189228811. The reversal of 189228793 is 397822981.

It can be written as a sum of positive squares in 3 ways, for example, as 660969 + 188567824 = 813^2 + 13732^2 .

It is not a de Polignac number, because 189228793 - 2¹ = 189228791 is a prime.

It is a super-2 number, since 2×189228793² = 71615072200473698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189228791) 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 5 ways as a sum of consecutive naturals, for example, 559680 + ... + 560017.

It is an arithmetic number, because the mean of its divisors is an integer number (34150789).

Almost surely, 2^189228793 is an apocalyptic number.

189228793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189228793 is a deficient number, since it is larger than the sum of its proper divisors (15675941).

189228793 is a wasteful number, since it uses less digits than its factorization.

189228793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119723 (or 1119710 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 189228793 is about 13756.0456890779. The cubic root of 189228793 is about 574.1108303758.

The spelling of 189228793 in words is "one hundred eighty-nine million, two hundred twenty-eight thousand, seven hundred ninety-three".