220361389 has 2 divisors, whose sum is σ = 220361390. Its totient is φ = 220361388.

The previous prime is 220361387. The next prime is 220361443. The reversal of 220361389 is 983163022.

It is a happy number.

220361389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183819364 + 36542025 = 13558^2 + 6045^2 .

It is a cyclic number.

It is not a de Polignac number, because 220361389 - 2¹ = 220361387 is a prime.

Together with 220361387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220361387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110180694 + 110180695.

It is an arithmetic number, because the mean of its divisors is an integer number (110180695).

Almost surely, 2^220361389 is an apocalyptic number.

It is an amenable number.

220361389 is a deficient number, since it is larger than the sum of its proper divisors (1).

220361389 is an equidigital number, since it uses as much as digits as its factorization.

220361389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 220361389 is about 14844.5743960546. The cubic root of 220361389 is about 604.0114439084.

The spelling of 220361389 in words is "two hundred twenty million, three hundred sixty-one thousand, three hundred eighty-nine".