220144819 has 2 divisors, whose sum is σ = 220144820. Its totient is φ = 220144818.

The previous prime is 220144807. The next prime is 220144843. The reversal of 220144819 is 918441022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220144819 - 2¹⁵ = 220112051 is a prime.

It is a super-2 number, since 2×220144819² = 96927482665085522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220144019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110072409 + 110072410.

It is an arithmetic number, because the mean of its divisors is an integer number (110072410).

Almost surely, 2^220144819 is an apocalyptic number.

220144819 is a deficient number, since it is larger than the sum of its proper divisors (1).

220144819 is an equidigital number, since it uses as much as digits as its factorization.

220144819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 220144819 is about 14837.2780185585. The cubic root of 220144819 is about 603.8135059730.

The spelling of 220144819 in words is "two hundred twenty million, one hundred forty-four thousand, eight hundred nineteen".