220018869 has 24 divisors (see below), whose sum is σ = 379173120. Its totient is φ = 125724312.

The previous prime is 220018837. The next prime is 220018921. The reversal of 220018869 is 968810022.

It is not a de Polignac number, because 220018869 - 2⁵ = 220018837 is a prime.

It is a super-2 number, since 2×220018869² = 96816605432078322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220018829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81829 + ... + 84474.

It is an arithmetic number, because the mean of its divisors is an integer number (15798880).

Almost surely, 2^220018869 is an apocalyptic number.

It is an amenable number.

220018869 is a deficient number, since it is larger than the sum of its proper divisors (159154251).

220018869 is a wasteful number, since it uses less digits than its factorization.

220018869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166326 (or 166313 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 220018869 is about 14833.0330344134. The cubic root of 220018869 is about 603.6983320624.

The spelling of 220018869 in words is "two hundred twenty million, eighteen thousand, eight hundred sixty-nine".