2179287198 has 72 divisors (see below), whose sum is σ = 5330534664. Its totient is φ = 642517920.

The previous prime is 2179287167. The next prime is 2179287199. The reversal of 2179287198 is 8917829712.

2179287198 is a `hidden beast` number, since 2 + 179 + 287 + 198 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179287199) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 67065 + ... + 94107.

Almost surely, 2^2179287198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2179287198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665267332).

2179287198 is an abundant number, since it is smaller than the sum of its proper divisors (3151247466).

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

2179287198 is a wasteful number, since it uses less digits than its factorization.

2179287198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27110 (or 27096 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 2179287198 is about 46682.8362248910. The cubic root of 2179287198 is about 1296.4969194977.

The spelling of 2179287198 in words is "two billion, one hundred seventy-nine million, two hundred eighty-seven thousand, one hundred ninety-eight".