18018083 has 4 divisors (see below), whose sum is σ = 18246240. Its totient is φ = 17789928.

The previous prime is 18018073. The next prime is 18018107. The reversal of 18018083 is 38081081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38081081 = 79 ⋅482039.

It is a cyclic number.

It is not a de Polignac number, because 18018083 - 2⁴ = 18018067 is a prime.

It is a super-3 number, since 3×18018083³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18018043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113960 + ... + 114117.

It is an arithmetic number, because the mean of its divisors is an integer number (4561560).

Almost surely, 2^18018083 is an apocalyptic number.

18018083 is a deficient number, since it is larger than the sum of its proper divisors (228157).

18018083 is an equidigital number, since it uses as much as digits as its factorization.

18018083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228156.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18018083 is about 4244.7712541431. The cubic root of 18018083 is about 262.1618709129.

The spelling of 18018083 in words is "eighteen million, eighteen thousand, eighty-three".