18088213 has 8 divisors (see below), whose sum is σ = 21250656. Its totient is φ = 15178800.

The previous prime is 18088207. The next prime is 18088219. The reversal of 18088213 is 31288081.

It is an interprime number because it is at equal distance from previous prime (18088207) and next prime (18088219).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18088213 - 2⁹ = 18087701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18088219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63103 + ... + 63388.

It is an arithmetic number, because the mean of its divisors is an integer number (2656332).

Almost surely, 2^18088213 is an apocalyptic number.

18088213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18088213 is a deficient number, since it is larger than the sum of its proper divisors (3162443).

18088213 is a wasteful number, since it uses less digits than its factorization.

18088213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126515.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 18088213 is about 4253.0239830032. The cubic root of 18088213 is about 262.5015594768.

The spelling of 18088213 in words is "eighteen million, eighty-eight thousand, two hundred thirteen".