20196173 has 2 divisors, whose sum is σ = 20196174. Its totient is φ = 20196172.

The previous prime is 20196109. The next prime is 20196199. The reversal of 20196173 is 37169102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17952169 + 2244004 = 4237^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 20196173 - 2⁶ = 20196109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20196773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10098086 + 10098087.

It is an arithmetic number, because the mean of its divisors is an integer number (10098087).

Almost surely, 2^20196173 is an apocalyptic number.

It is an amenable number.

20196173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20196173 is an equidigital number, since it uses as much as digits as its factorization.

20196173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 20196173 is about 4494.0152425198. The cubic root of 20196173 is about 272.3263680799.

It can be divided in two parts, 2019 and 6173, that added together give a 13-th power (8192 = 2¹³).

The spelling of 20196173 in words is "twenty million, one hundred ninety-six thousand, one hundred seventy-three".