220173893 has 2 divisors, whose sum is σ = 220173894. Its totient is φ = 220173892.

The previous prime is 220173857. The next prime is 220173923. The reversal of 220173893 is 398371022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152819044 + 67354849 = 12362^2 + 8207^2 .

It is a cyclic number.

It is not a de Polignac number, because 220173893 - 2¹⁸ = 219911749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220173823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110086946 + 110086947.

It is an arithmetic number, because the mean of its divisors is an integer number (110086947).

Almost surely, 2^220173893 is an apocalyptic number.

It is an amenable number.

220173893 is a deficient number, since it is larger than the sum of its proper divisors (1).

220173893 is an equidigital number, since it uses as much as digits as its factorization.

220173893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 220173893 is about 14838.2577481320. The cubic root of 220173893 is about 603.8400862050.

The spelling of 220173893 in words is "two hundred twenty million, one hundred seventy-three thousand, eight hundred ninety-three".