220342819 has 2 divisors, whose sum is σ = 220342820. Its totient is φ = 220342818.

The previous prime is 220342813. The next prime is 220342847. The reversal of 220342819 is 918243022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220342819 - 2¹⁹ = 219818531 is a prime.

It is a super-2 number, since 2×220342819² = 97101915769733522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220342813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110171409 + 110171410.

It is an arithmetic number, because the mean of its divisors is an integer number (110171410).

Almost surely, 2^220342819 is an apocalyptic number.

220342819 is a deficient number, since it is larger than the sum of its proper divisors (1).

220342819 is an equidigital number, since it uses as much as digits as its factorization.

220342819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 220342819 is about 14843.9489018253. The cubic root of 220342819 is about 603.9944766172.

The spelling of 220342819 in words is "two hundred twenty million, three hundred forty-two thousand, eight hundred nineteen".