2018217804 has 12 divisors (see below), whose sum is σ = 4709174904. Its totient is φ = 672739264.

The previous prime is 2018217797. The next prime is 2018217809. The reversal of 2018217804 is 4087128102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2018217809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84092397 + ... + 84092420.

It is an arithmetic number, because the mean of its divisors is an integer number (392431242).

Almost surely, 2^2018217804 is an apocalyptic number.

It is an amenable number.

2018217804 is an abundant number, since it is smaller than the sum of its proper divisors (2690957100).

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

2018217804 is a wasteful number, since it uses less digits than its factorization.

2018217804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168184824 (or 168184822 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 2018217804 is about 44924.5790631365. The cubic root of 2018217804 is about 1263.7349920781.

The spelling of 2018217804 in words is "two billion, eighteen million, two hundred seventeen thousand, eight hundred four".