18393361 has 8 divisors (see below), whose sum is σ = 21110144. Its totient is φ = 15698880.

The previous prime is 18393359. The next prime is 18393367. The reversal of 18393361 is 16339381.

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

It is a cyclic number.

It is not a de Polignac number, because 18393361 - 2¹ = 18393359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18393367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3765 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (2638768).

Almost surely, 2^18393361 is an apocalyptic number.

It is an amenable number.

18393361 is a deficient number, since it is larger than the sum of its proper divisors (2716783).

18393361 is a wasteful number, since it uses less digits than its factorization.

18393361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151.

The product of its digits is 11664, while the sum is 34.

The square root of 18393361 is about 4288.7481856598. The cubic root of 18393361 is about 263.9694686532.

The spelling of 18393361 in words is "eighteen million, three hundred ninety-three thousand, three hundred sixty-one".