20197183 has 2 divisors, whose sum is σ = 20197184. Its totient is φ = 20197182.

The previous prime is 20197159. The next prime is 20197189. The reversal of 20197183 is 38179102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20197183 is a prime.

It is a super-2 number, since 2×20197183² = 815852402270978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20197189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10098591 + 10098592.

It is an arithmetic number, because the mean of its divisors is an integer number (10098592).

Almost surely, 2^20197183 is an apocalyptic number.

20197183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20197183 is an equidigital number, since it uses as much as digits as its factorization.

20197183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 20197183 is about 4494.1276127854. The cubic root of 20197183 is about 272.3309076371.

The spelling of 20197183 in words is "twenty million, one hundred ninety-seven thousand, one hundred eighty-three".