18479233 has 6 divisors (see below), whose sum is σ = 18942662. Its totient is φ = 18026880.

The previous prime is 18479231. The next prime is 18479249. The reversal of 18479233 is 33297481.

It can be written as a sum of positive squares in 3 ways, for example, as 2214144 + 16265089 = 1488^2 + 4033^2 .

It is not a de Polignac number, because 18479233 - 2¹ = 18479231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18479192 and 18479201.

It is not an unprimeable number, because it can be changed into a prime (18479231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3816 + ... + 7177.

Almost surely, 2^18479233 is an apocalyptic number.

It is an amenable number.

18479233 is a deficient number, since it is larger than the sum of its proper divisors (463429).

18479233 is an equidigital number, since it uses as much as digits as its factorization.

18479233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075 (or 11034 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 18479233 is about 4298.7478409416. The cubic root of 18479233 is about 264.3796239227.

The spelling of 18479233 in words is "eighteen million, four hundred seventy-nine thousand, two hundred thirty-three".