18353133 has 12 divisors (see below), whose sum is σ = 26671008. Its totient is φ = 12161160.

The previous prime is 18353129. The next prime is 18353161. The reversal of 18353133 is 33135381.

It is not a de Polignac number, because 18353133 - 2² = 18353129 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18353097 and 18353106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18353033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4603 + ... + 7608.

It is an arithmetic number, because the mean of its divisors is an integer number (2222584).

Almost surely, 2^18353133 is an apocalyptic number.

It is an amenable number.

18353133 is a deficient number, since it is larger than the sum of its proper divisors (8317875).

18353133 is a wasteful number, since it uses less digits than its factorization.

18353133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384 (or 12381 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 18353133 is about 4284.0556719072. The cubic root of 18353133 is about 263.7768862179.

The spelling of 18353133 in words is "eighteen million, three hundred fifty-three thousand, one hundred thirty-three".