18130322 has 16 divisors (see below), whose sum is σ = 31207680. Its totient is φ = 7738368.

The previous prime is 18130309. The next prime is 18130349. The reversal of 18130322 is 22303181.

It is a junction number, because it is equal to n+sod(n) for n = 18130294 and 18130303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079 + ... + 6117.

It is an arithmetic number, because the mean of its divisors is an integer number (1950480).

Almost surely, 2^18130322 is an apocalyptic number.

18130322 is a deficient number, since it is larger than the sum of its proper divisors (13077358).

18130322 is a wasteful number, since it uses less digits than its factorization.

18130322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18130322 is about 4257.9715828079. The cubic root of 18130322 is about 262.7051010808.

It can be divided in two parts, 181 and 30322, that added together give a palindrome (30503).

The spelling of 18130322 in words is "eighteen million, one hundred thirty thousand, three hundred twenty-two".