1818382000 has 80 divisors (see below), whose sum is σ = 4414842432. Its totient is φ = 724377600.

The previous prime is 1818381997. The next prime is 1818382091. The reversal of 1818382000 is 2838181.

It is a tau number, because it is divible by the number of its divisors (80).

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, 524272 + ... + 527728.

Almost surely, 2^1818382000 is an apocalyptic number.

1818382000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818382000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207421216).

1818382000 is an abundant number, since it is smaller than the sum of its proper divisors (2596460432).

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

1818382000 is a wasteful number, since it uses less digits than its factorization.

1818382000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743 (or 3727 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1818382000 is about 42642.4905464022. The cubic root of 1818382000 is about 1220.5672360002.

The spelling of 1818382000 in words is "one billion, eight hundred eighteen million, three hundred eighty-two thousand".