18122283 has 12 divisors (see below), whose sum is σ = 26239200. Its totient is φ = 12052656.

The previous prime is 18122243. The next prime is 18122309. The reversal of 18122283 is 38222181.

It is not a de Polignac number, because 18122283 - 2⁹ = 18121771 is a prime.

It is a super-2 number, since 2×18122283² = 656834282264178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18122243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1993 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (2186600).

Almost surely, 2^18122283 is an apocalyptic number.

18122283 is a deficient number, since it is larger than the sum of its proper divisors (8116917).

18122283 is a wasteful number, since it uses less digits than its factorization.

18122283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 4815 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 18122283 is about 4257.0274840550. The cubic root of 18122283 is about 262.6662674531. Note that the first 3 decimals are identical.

It can be divided in two parts, 1812 and 2283, that added together give a triangular number (4095 = T₉₀).

The spelling of 18122283 in words is "eighteen million, one hundred twenty-two thousand, two hundred eighty-three".