20118083 has 4 divisors (see below), whose sum is σ = 20811840. Its totient is φ = 19424328.

The previous prime is 20118073. The next prime is 20118097. The reversal of 20118083 is 38081102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38081102 = 2 ⋅19040551.

It is a cyclic number.

It is not a de Polignac number, because 20118083 - 2⁴ = 20118067 is a prime.

It is a super-3 number, since 3×20118083³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20118013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346835 + ... + 346892.

It is an arithmetic number, because the mean of its divisors is an integer number (5202960).

Almost surely, 2^20118083 is an apocalyptic number.

20118083 is a deficient number, since it is larger than the sum of its proper divisors (693757).

20118083 is an equidigital number, since it uses as much as digits as its factorization.

20118083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693756.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 20118083 is about 4485.3186062977. The cubic root of 20118083 is about 271.9749246997.

Adding to 20118083 its reverse (38081102), we get a palindrome (58199185).

The spelling of 20118083 in words is "twenty million, one hundred eighteen thousand, eighty-three".