2198089811 has 4 divisors (see below), whose sum is σ = 2198459952. Its totient is φ = 2197719672.

The previous prime is 2198089807. The next prime is 2198089823. The reversal of 2198089811 is 1189808912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2198089811 - 2² = 2198089807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2198089211) 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, 176015 + ... + 188088.

It is an arithmetic number, because the mean of its divisors is an integer number (549614988).

Almost surely, 2^2198089811 is an apocalyptic number.

2198089811 is a deficient number, since it is larger than the sum of its proper divisors (370141).

2198089811 is an equidigital number, since it uses as much as digits as its factorization.

2198089811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370140.

The product of its (nonzero) digits is 82944, while the sum is 47.

The square root of 2198089811 is about 46883.7904930905. The cubic root of 2198089811 is about 1300.2149173277.

The spelling of 2198089811 in words is "two billion, one hundred ninety-eight million, eighty-nine thousand, eight hundred eleven".