2018985904 has 80 divisors (see below), whose sum is σ = 4446902880. Its totient is φ = 880312320.

The previous prime is 2018985901. The next prime is 2018985907. The reversal of 2018985904 is 4095898102.

It is an interprime number because it is at equal distance from previous prime (2018985901) and next prime (2018985907).

It is not an unprimeable number, because it can be changed into a prime (2018985901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532834 + ... + 2533630.

It is an arithmetic number, because the mean of its divisors is an integer number (55586286).

Almost surely, 2^2018985904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2018985904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223451440).

2018985904 is an abundant number, since it is smaller than the sum of its proper divisors (2427916976).

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

2018985904 is a wasteful number, since it uses less digits than its factorization.

2018985904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 2018985904 is about 44933.1270222761. The cubic root of 2018985904 is about 1263.8952905570.

The spelling of 2018985904 in words is "two billion, eighteen million, nine hundred eighty-five thousand, nine hundred four".