220405193 has 2 divisors, whose sum is σ = 220405194. Its totient is φ = 220405192.

The previous prime is 220405183. The next prime is 220405219. The reversal of 220405193 is 391504022.

220405193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (220405219) can be obtained adding 220405193 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122058304 + 98346889 = 11048^2 + 9917^2 .

It is a cyclic number.

It is not a de Polignac number, because 220405193 - 2⁸ = 220404937 is a prime.

It is equal to p_12143555 and since 220405193 and 12143555 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (220405183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110202596 + 110202597.

It is an arithmetic number, because the mean of its divisors is an integer number (110202597).

Almost surely, 2^220405193 is an apocalyptic number.

It is an amenable number.

220405193 is a deficient number, since it is larger than the sum of its proper divisors (1).

220405193 is an equidigital number, since it uses as much as digits as its factorization.

220405193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 220405193 is about 14846.0497439555. The cubic root of 220405193 is about 604.0514635696.

The spelling of 220405193 in words is "two hundred twenty million, four hundred five thousand, one hundred ninety-three".