18481353 has 16 divisors (see below), whose sum is σ = 27325632. Its totient is φ = 11016000.

The previous prime is 18481321. The next prime is 18481369. The reversal of 18481353 is 35318481.

It is not a de Polignac number, because 18481353 - 2⁵ = 18481321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18481553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2578 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (1707852).

Almost surely, 2^18481353 is an apocalyptic number.

It is an amenable number.

18481353 is a deficient number, since it is larger than the sum of its proper divisors (8844279).

18481353 is a wasteful number, since it uses less digits than its factorization.

18481353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256.

The product of its digits is 11520, while the sum is 33.

The square root of 18481353 is about 4298.9944173027. The cubic root of 18481353 is about 264.3897337104.

The spelling of 18481353 in words is "eighteen million, four hundred eighty-one thousand, three hundred fifty-three".