18163084 has 6 divisors (see below), whose sum is σ = 31785404. Its totient is φ = 9081540.

The previous prime is 18163081. The next prime is 18163109. The reversal of 18163084 is 48036181.

It is not an unprimeable number, because it can be changed into a prime (18163081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270382 + ... + 2270389.

Almost surely, 2^18163084 is an apocalyptic number.

It is an amenable number.

18163084 is a deficient number, since it is larger than the sum of its proper divisors (13622320).

18163084 is a wasteful number, since it uses less digits than its factorization.

18163084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540775 (or 4540773 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18163084 is about 4261.8169834004. The cubic root of 18163084 is about 262.8632443561.

It can be divided in two parts, 1816 and 3084, that added together give a square (4900 = 70²).

The spelling of 18163084 in words is "eighteen million, one hundred sixty-three thousand, eighty-four".