4891198418 has 18 divisors (see below), whose sum is σ = 7796440911. Its totient is φ = 2300949184.

The previous prime is 4891198391. The next prime is 4891198427. The reversal of 4891198418 is 8148911984.

It can be written as a sum of positive squares in 5 ways, for example, as 4861854529 + 29343889 = 69727^2 + 5417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=49453.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4891198418.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1679948 + ... + 1682856.

Almost surely, 2^4891198418 is an apocalyptic number.

4891198418 is a deficient number, since it is larger than the sum of its proper divisors (2905242493).

4891198418 is an frugal number, since it uses more digits than its factorization.

4891198418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 2928 counting only the distinct ones).

The product of its digits is 663552, while the sum is 53.

The square root of 4891198418 is about 69937.1033000367. The cubic root of 4891198418 is about 1697.4816712659.

The spelling of 4891198418 in words is "four billion, eight hundred ninety-one million, one hundred ninety-eight thousand, four hundred eighteen".