2063198891 has 4 divisors (see below), whose sum is σ = 2221906512. Its totient is φ = 1904491272.

The previous prime is 2063198873. The next prime is 2063198911. The reversal of 2063198891 is 1988913602.

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 2063198891 - 2¹⁸ = 2062936747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2063198821) 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, 79353791 + ... + 79353816.

It is an arithmetic number, because the mean of its divisors is an integer number (555476628).

Almost surely, 2^2063198891 is an apocalyptic number.

2063198891 is a deficient number, since it is larger than the sum of its proper divisors (158707621).

2063198891 is a wasteful number, since it uses less digits than its factorization.

2063198891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158707620.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 2063198891 is about 45422.4491964051. The cubic root of 2063198891 is about 1273.0546041062.

The spelling of 2063198891 in words is "two billion, sixty-three million, one hundred ninety-eight thousand, eight hundred ninety-one".