918330220 has 12 divisors (see below), whose sum is σ = 1928493504. Its totient is φ = 367332080.

The previous prime is 918330187. The next prime is 918330229. The reversal of 918330220 is 22033819.

It is not an unprimeable number, because it can be changed into a prime (918330229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22958236 + ... + 22958275.

It is an arithmetic number, because the mean of its divisors is an integer number (160707792).

Almost surely, 2^918330220 is an apocalyptic number.

It is an amenable number.

918330220 is an abundant number, since it is smaller than the sum of its proper divisors (1010163284).

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

918330220 is a wasteful number, since it uses less digits than its factorization.

918330220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45916520 (or 45916518 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 918330220 is about 30303.9637671378. The cubic root of 918330220 is about 972.0000606841. Note that the first 4 decimals are identical.

The spelling of 918330220 in words is "nine hundred eighteen million, three hundred thirty thousand, two hundred twenty".