2018211785898 has 256 divisors, whose sum is σ = 5393483366400. Its totient is φ = 487622833920.

The previous prime is 2018211785857. The next prime is 2018211785929. The reversal of 2018211785898 is 8985871128102.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 571244140 + ... + 571247672.

It is an arithmetic number, because the mean of its divisors is an integer number (21068294400).

Almost surely, 2^{2018211785898} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2018211785898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2696741683200).

2018211785898 is an abundant number, since it is smaller than the sum of its proper divisors (3375271580502).

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

2018211785898 is a wasteful number, since it uses less digits than its factorization.

2018211785898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737.

The product of its (nonzero) digits is 5160960, while the sum is 60.

The spelling of 2018211785898 in words is "two trillion, eighteen billion, two hundred eleven million, seven hundred eighty-five thousand, eight hundred ninety-eight".