20485193 has 2 divisors, whose sum is σ = 20485194. Its totient is φ = 20485192.

The previous prime is 20485163. The next prime is 20485217. The reversal of 20485193 is 39158402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19430464 + 1054729 = 4408^2 + 1027^2 .

It is a cyclic number.

It is not a de Polignac number, because 20485193 - 2²⁰ = 19436617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20485163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10242596 + 10242597.

It is an arithmetic number, because the mean of its divisors is an integer number (10242597).

Almost surely, 2^20485193 is an apocalyptic number.

It is an amenable number.

20485193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20485193 is an equidigital number, since it uses as much as digits as its factorization.

20485193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20485193 is about 4526.0571140895. The cubic root of 20485193 is about 273.6192742668.

The spelling of 20485193 in words is "twenty million, four hundred eighty-five thousand, one hundred ninety-three".