2018403820 has 24 divisors (see below), whose sum is σ = 4461735600. Its totient is φ = 764868672.

The previous prime is 2018403817. The next prime is 2018403841. The reversal of 2018403820 is 283048102.

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 7 ways as a sum of consecutive naturals, for example, 2655415 + ... + 2656174.

It is an arithmetic number, because the mean of its divisors is an integer number (185905650).

Almost surely, 2^2018403820 is an apocalyptic number.

2018403820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018403820 is an abundant number, since it is smaller than the sum of its proper divisors (2443331780).

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

2018403820 is a wasteful number, since it uses less digits than its factorization.

2018403820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311617 (or 5311615 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2018403820 is about 44926.6493297686. The cubic root of 2018403820 is about 1263.7738163824.

The spelling of 2018403820 in words is "two billion, eighteen million, four hundred three thousand, eight hundred twenty".