220193609 has 2 divisors, whose sum is σ = 220193610. Its totient is φ = 220193608.

The previous prime is 220193581. The next prime is 220193629. The reversal of 220193609 is 906391022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189667984 + 30525625 = 13772^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 220193609 - 2¹² = 220189513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220193629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110096804 + 110096805.

It is an arithmetic number, because the mean of its divisors is an integer number (110096805).

Almost surely, 2^220193609 is an apocalyptic number.

It is an amenable number.

220193609 is a deficient number, since it is larger than the sum of its proper divisors (1).

220193609 is an equidigital number, since it uses as much as digits as its factorization.

220193609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 220193609 is about 14838.9220969719. The cubic root of 220193609 is about 603.8581097705.

The spelling of 220193609 in words is "two hundred twenty million, one hundred ninety-three thousand, six hundred nine".