20930183 has 2 divisors, whose sum is σ = 20930184. Its totient is φ = 20930182.

The previous prime is 20930171. The next prime is 20930201. The reversal of 20930183 is 38103902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20930183 - 2⁴ = 20930167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20930113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10465091 + 10465092.

It is an arithmetic number, because the mean of its divisors is an integer number (10465092).

Almost surely, 2^20930183 is an apocalyptic number.

20930183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20930183 is an equidigital number, since it uses as much as digits as its factorization.

20930183 is an evil number, because the sum of its binary digits is even.

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

The square root of 20930183 is about 4574.9516937340. The cubic root of 20930183 is about 275.5863324526.

The spelling of 20930183 in words is "twenty million, nine hundred thirty thousand, one hundred eighty-three".