220184109 has 8 divisors (see below), whose sum is σ = 326198720. Its totient is φ = 146789388.

The previous prime is 220184099. The next prime is 220184117. The reversal of 220184109 is 901481022.

It is not a de Polignac number, because 220184109 - 2⁴ = 220184093 is a prime.

It is a super-2 number, since 2×220184109² = 96962083712247762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8154967 = 220184109 / (2 + 2 + 0 + 1 + 8 + 4 + 1 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220188109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4077457 + ... + 4077510.

It is an arithmetic number, because the mean of its divisors is an integer number (40774840).

Almost surely, 2^220184109 is an apocalyptic number.

It is an amenable number.

220184109 is a deficient number, since it is larger than the sum of its proper divisors (106014611).

220184109 is an equidigital number, since it uses as much as digits as its factorization.

220184109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154976 (or 8154970 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 220184109 is about 14838.6019894059. The cubic root of 220184109 is about 603.8494253911.

The spelling of 220184109 in words is "two hundred twenty million, one hundred eighty-four thousand, one hundred nine".