1838522220 has 24 divisors (see below), whose sum is σ = 5147862384. Its totient is φ = 490272576.

The previous prime is 1838522201. The next prime is 1838522221. The reversal of 1838522220 is 222258381.

It is not an unprimeable number, because it can be changed into a prime (1838522221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15320959 + ... + 15321078.

It is an arithmetic number, because the mean of its divisors is an integer number (214494266).

Almost surely, 2^1838522220 is an apocalyptic number.

1838522220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838522220 is an abundant number, since it is smaller than the sum of its proper divisors (3309340164).

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

1838522220 is a wasteful number, since it uses less digits than its factorization.

1838522220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30642049 (or 30642047 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1838522220 is about 42877.9922571008. The cubic root of 1838522220 is about 1225.0569947104.

The spelling of 1838522220 in words is "one billion, eight hundred thirty-eight million, five hundred twenty-two thousand, two hundred twenty".