20183047 has 2 divisors, whose sum is σ = 20183048. Its totient is φ = 20183046.

The previous prime is 20183021. The next prime is 20183057. The reversal of 20183047 is 74038102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20183047 - 2¹⁹ = 19658759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20183057) 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 as a sum of consecutive naturals, namely, 10091523 + 10091524.

It is an arithmetic number, because the mean of its divisors is an integer number (10091524).

Almost surely, 2^20183047 is an apocalyptic number.

20183047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20183047 is an equidigital number, since it uses as much as digits as its factorization.

20183047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20183047 is about 4492.5546184771. The cubic root of 20183047 is about 272.2673580456.

The spelling of 20183047 in words is "twenty million, one hundred eighty-three thousand, forty-seven".