20183903 has 8 divisors (see below), whose sum is σ = 21120000. Its totient is φ = 19252728.

The previous prime is 20183873. The next prime is 20183929. The reversal of 20183903 is 30938102.

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 20183903 - 2¹² = 20179807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20183003) 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, 9098 + ... + 11096.

It is an arithmetic number, because the mean of its divisors is an integer number (2640000).

Almost surely, 2^20183903 is an apocalyptic number.

20183903 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20183903 is a deficient number, since it is larger than the sum of its proper divisors (936097).

20183903 is a wasteful number, since it uses less digits than its factorization.

20183903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20183903 is about 4492.6498862030. The cubic root of 20183903 is about 272.2712071104.

The spelling of 20183903 in words is "twenty million, one hundred eighty-three thousand, nine hundred three".