8031904218 has 128 divisors (see below), whose sum is σ = 20482156800. Its totient is φ = 2311151616.

The previous prime is 8031904207. The next prime is 8031904229. The reversal of 8031904218 is 8124091308.

It is an interprime number because it is at equal distance from previous prime (8031904207) and next prime (8031904229).

It is a super-2 number, since 2×8031904218² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1943178 + ... + 1947306.

It is an arithmetic number, because the mean of its divisors is an integer number (160016850).

Almost surely, 2^8031904218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8031904218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10241078400).

8031904218 is an abundant number, since it is smaller than the sum of its proper divisors (12450252582).

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

8031904218 is a wasteful number, since it uses less digits than its factorization.

8031904218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333 (or 4327 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 8031904218 is about 89620.8916380550. The cubic root of 8031904218 is about 2002.6551583406.

The spelling of 8031904218 in words is "eight billion, thirty-one million, nine hundred four thousand, two hundred eighteen".