4171218198 has 32 divisors (see below), whose sum is σ = 9728793600. Its totient is φ = 1191776040.

The previous prime is 4171218193. The next prime is 4171218223. The reversal of 4171218198 is 8918121714.

It is a super-2 number, since 2×4171218198² = 34798122510652734408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4171218193) 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, 1011358 + ... + 1015473.

It is an arithmetic number, because the mean of its divisors is an integer number (304024800).

Almost surely, 2^4171218198 is an apocalyptic number.

4171218198 is an abundant number, since it is smaller than the sum of its proper divisors (5557575402).

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

4171218198 is a wasteful number, since it uses less digits than its factorization.

4171218198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026857 (or 2026843 counting only the distinct ones).

The product of its digits is 32256, while the sum is 42.

The square root of 4171218198 is about 64584.9688240228. The cubic root of 4171218198 is about 1609.7346884809.

The spelling of 4171218198 in words is "four billion, one hundred seventy-one million, two hundred eighteen thousand, one hundred ninety-eight".