20109883 has 2 divisors, whose sum is σ = 20109884. Its totient is φ = 20109882.

The previous prime is 20109877. The next prime is 20109893. The reversal of 20109883 is 38890102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20109883 - 2⁵ = 20109851 is a prime.

It is not a weakly prime, because it can be changed into another prime (20109863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054941 + 10054942.

It is an arithmetic number, because the mean of its divisors is an integer number (10054942).

Almost surely, 2^20109883 is an apocalyptic number.

20109883 is a deficient number, since it is larger than the sum of its proper divisors (1).

20109883 is an equidigital number, since it uses as much as digits as its factorization.

20109883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 20109883 is about 4484.4044197641. The cubic root of 20109883 is about 271.9379679403.

Adding to 20109883 its reverse (38890102), we get a palindrome (58999985).

The spelling of 20109883 in words is "twenty million, one hundred nine thousand, eight hundred eighty-three".