18213069 has 24 divisors (see below), whose sum is σ = 29491648. Its totient is φ = 9792000.

The previous prime is 18213067. The next prime is 18213101. The reversal of 18213069 is 96031281.

It is not a de Polignac number, because 18213069 - 2¹ = 18213067 is a prime.

It is a super-2 number, since 2×18213069² = 663431764797522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18213067) 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 23 ways as a sum of consecutive naturals, for example, 4569 + ... + 7569.

Almost surely, 2^18213069 is an apocalyptic number.

It is an amenable number.

18213069 is a deficient number, since it is larger than the sum of its proper divisors (11278579).

18213069 is a wasteful number, since it uses less digits than its factorization.

18213069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045 (or 3028 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 18213069 is about 4267.6772370928. The cubic root of 18213069 is about 263.1041576388.

The spelling of 18213069 in words is "eighteen million, two hundred thirteen thousand, sixty-nine".