18284001940 has 48 divisors (see below), whose sum is σ = 39391587648. Its totient is φ = 7126458624.

The previous prime is 18284001937. The next prime is 18284001979. The reversal of 18284001940 is 4910048281.

It is a self number, because there is not a number n which added to its sum of digits gives 18284001940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45739 + ... + 196621.

It is an arithmetic number, because the mean of its divisors is an integer number (820658076).

Almost surely, 2^18284001940 is an apocalyptic number.

18284001940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18284001940 is an abundant number, since it is smaller than the sum of its proper divisors (21107585708).

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

18284001940 is a wasteful number, since it uses less digits than its factorization.

18284001940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151048 (or 151046 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 18284001940 in words is "eighteen billion, two hundred eighty-four million, one thousand, nine hundred forty".