2018909790 has 96 divisors (see below), whose sum is σ = 5619369600. Its totient is φ = 501370560.

The previous prime is 2018909747. The next prime is 2018909803. The reversal of 2018909790 is 979098102.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 90885 + ... + 110895.

It is an arithmetic number, because the mean of its divisors is an integer number (58535100).

Almost surely, 2^2018909790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2018909790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2809684800).

2018909790 is an abundant number, since it is smaller than the sum of its proper divisors (3600459810).

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

2018909790 is a wasteful number, since it uses less digits than its factorization.

2018909790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20102 (or 20099 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 2018909790 is about 44932.2800445292. The cubic root of 2018909790 is about 1263.8794077757.

The spelling of 2018909790 in words is "two billion, eighteen million, nine hundred nine thousand, seven hundred ninety".