2198239591 has 8 divisors (see below), whose sum is σ = 2237268384. Its totient is φ = 2159435040.

The previous prime is 2198239577. The next prime is 2198239601. The reversal of 2198239591 is 1959328912.

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 2198239591 - 2¹⁷ = 2198108519 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 (2198239691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36220 + ... + 75553.

It is an arithmetic number, because the mean of its divisors is an integer number (279658548).

Almost surely, 2^2198239591 is an apocalyptic number.

2198239591 is a deficient number, since it is larger than the sum of its proper divisors (39028793).

2198239591 is a wasteful number, since it uses less digits than its factorization.

2198239591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112121.

The product of its digits is 349920, while the sum is 49.

The square root of 2198239591 is about 46885.3878196608. The cubic root of 2198239591 is about 1300.2444492977.

The spelling of 2198239591 in words is "two billion, one hundred ninety-eight million, two hundred thirty-nine thousand, five hundred ninety-one".