220181149 has 2 divisors, whose sum is σ = 220181150. Its totient is φ = 220181148.

The previous prime is 220181123. The next prime is 220181167. The reversal of 220181149 is 941181022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163072900 + 57108249 = 12770^2 + 7557^2 .

It is a cyclic number.

It is not a de Polignac number, because 220181149 - 2⁹ = 220180637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220181179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110090574 + 110090575.

It is an arithmetic number, because the mean of its divisors is an integer number (110090575).

Almost surely, 2^220181149 is an apocalyptic number.

It is an amenable number.

220181149 is a deficient number, since it is larger than the sum of its proper divisors (1).

220181149 is an equidigital number, since it uses as much as digits as its factorization.

220181149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 220181149 is about 14838.5022492164. The cubic root of 220181149 is about 603.8467194703.

The spelling of 220181149 in words is "two hundred twenty million, one hundred eighty-one thousand, one hundred forty-nine".