18613361 has 8 divisors (see below), whose sum is σ = 20692224. Its totient is φ = 16626960.

The previous prime is 18613339. The next prime is 18613373. The reversal of 18613361 is 16331681.

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 18613361 - 2⁶ = 18613297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18613061) 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, 22691 + ... + 23496.

It is an arithmetic number, because the mean of its divisors is an integer number (2586528).

Almost surely, 2^18613361 is an apocalyptic number.

It is an amenable number.

18613361 is a deficient number, since it is larger than the sum of its proper divisors (2078863).

18613361 is a wasteful number, since it uses less digits than its factorization.

18613361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46231.

The product of its digits is 2592, while the sum is 29.

The square root of 18613361 is about 4314.3204563407. The cubic root of 18613361 is about 265.0177322892.

The spelling of 18613361 in words is "eighteen million, six hundred thirteen thousand, three hundred sixty-one".