2198021813 has 8 divisors (see below), whose sum is σ = 2407221600. Its totient is φ = 1994553648.

The previous prime is 2198021807. The next prime is 2198021831. The reversal of 2198021813 is 3181208912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2198021813 - 2⁸ = 2198021557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198221813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432103 + ... + 1433636.

It is an arithmetic number, because the mean of its divisors is an integer number (300902700).

Almost surely, 2^2198021813 is an apocalyptic number.

It is an amenable number.

2198021813 is a deficient number, since it is larger than the sum of its proper divisors (209199787).

2198021813 is a wasteful number, since it uses less digits than its factorization.

2198021813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865811.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 2198021813 is about 46883.0653114747. The cubic root of 2198021813 is about 1300.2015097885.

The spelling of 2198021813 in words is "two billion, one hundred ninety-eight million, twenty-one thousand, eight hundred thirteen".