918182020 has 48 divisors (see below), whose sum is σ = 2214777600. Its totient is φ = 313213824.

The previous prime is 918181981. The next prime is 918182033. The reversal of 918182020 is 20281819.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11382 + ... + 44338.

It is an arithmetic number, because the mean of its divisors is an integer number (46141200).

Almost surely, 2^918182020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918182020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107388800).

918182020 is an abundant number, since it is smaller than the sum of its proper divisors (1296595580).

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

918182020 is a wasteful number, since it uses less digits than its factorization.

918182020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33172 (or 33170 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 918182020 is about 30301.5184438008. The cubic root of 918182020 is about 971.9477707940.

The spelling of 918182020 in words is "nine hundred eighteen million, one hundred eighty-two thousand, twenty".