2858518221 has 12 divisors (see below), whose sum is σ = 4127092128. Its totient is φ = 1759087824.

The previous prime is 2858518219. The next prime is 2858518231. The reversal of 2858518221 is 1228158582.

It is not a de Polignac number, because 2858518221 - 2¹ = 2858518219 is a prime.

It is a super-2 number, since 2×2858518221² = 16342252839578009682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2858518231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2818545 + ... + 2819558.

It is an arithmetic number, because the mean of its divisors is an integer number (343924344).

Almost surely, 2^2858518221 is an apocalyptic number.

It is an amenable number.

2858518221 is a deficient number, since it is larger than the sum of its proper divisors (1268573907).

2858518221 is a wasteful number, since it uses less digits than its factorization.

2858518221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638132 (or 5638119 counting only the distinct ones).

The product of its digits is 102400, while the sum is 42.

The square root of 2858518221 is about 53465.1121854242. The cubic root of 2858518221 is about 1419.2110642703.

The spelling of 2858518221 in words is "two billion, eight hundred fifty-eight million, five hundred eighteen thousand, two hundred twenty-one".