618528222 has 24 divisors (see below), whose sum is σ = 1443233064. Its totient is φ = 190316304.

The previous prime is 618528217. The next prime is 618528233. The reversal of 618528222 is 222825816.

It is a super-2 number, since 2×618528222² = 765154322820962568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321408 + ... + 1321875.

It is an arithmetic number, because the mean of its divisors is an integer number (60134711).

Almost surely, 2^618528222 is an apocalyptic number.

618528222 is an abundant number, since it is smaller than the sum of its proper divisors (824704842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618528222 is a wasteful number, since it uses less digits than its factorization.

618528222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643304 (or 2643301 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 618528222 is about 24870.2276226013. The cubic root of 618528222 is about 852.0266390533.

The spelling of 618528222 in words is "six hundred eighteen million, five hundred twenty-eight thousand, two hundred twenty-two".