18983133 has 16 divisors (see below), whose sum is σ = 30287040. Its totient is φ = 11681712.

The previous prime is 18983093. The next prime is 18983161. The reversal of 18983133 is 33138981.

It is a de Polignac number, because none of the positive numbers 2^k-18983133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18983233) 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, 26691 + ... + 27392.

It is an arithmetic number, because the mean of its divisors is an integer number (1892940).

Almost surely, 2^18983133 is an apocalyptic number.

18983133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18983133 is a deficient number, since it is larger than the sum of its proper divisors (11303907).

18983133 is a wasteful number, since it uses less digits than its factorization.

18983133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54105 (or 54099 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 18983133 is about 4356.9637363650. The cubic root of 18983133 is about 266.7611802133.

The spelling of 18983133 in words is "eighteen million, nine hundred eighty-three thousand, one hundred thirty-three".