2018291820 has 24 divisors (see below), whose sum is σ = 5651217264. Its totient is φ = 538211136.

The previous prime is 2018291819. The next prime is 2018291831. The reversal of 2018291820 is 281928102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16819039 + ... + 16819158.

It is an arithmetic number, because the mean of its divisors is an integer number (235467386).

Almost surely, 2^2018291820 is an apocalyptic number.

2018291820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018291820 is an abundant number, since it is smaller than the sum of its proper divisors (3632925444).

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

2018291820 is a wasteful number, since it uses less digits than its factorization.

2018291820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638209 (or 33638207 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 2018291820 is about 44925.4028362574. The cubic root of 2018291820 is about 1263.7504406033.

The spelling of 2018291820 in words is "two billion, eighteen million, two hundred ninety-one thousand, eight hundred twenty".