2198599581 has 8 divisors (see below), whose sum is σ = 2959927360. Its totient is φ = 1451502432.

The previous prime is 2198599567. The next prime is 2198599597. The reversal of 2198599581 is 1859958912.

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

It is not a de Polignac number, because 2198599581 - 2⁶ = 2198599517 is a prime.

It is a super-2 number, since 2×2198599581² = 9667680235146751122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198599531) 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, 3557296 + ... + 3557913.

It is an arithmetic number, because the mean of its divisors is an integer number (369990920).

Almost surely, 2^2198599581 is an apocalyptic number.

It is an amenable number.

2198599581 is a deficient number, since it is larger than the sum of its proper divisors (761327779).

2198599581 is a wasteful number, since it uses less digits than its factorization.

2198599581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115315.

The product of its digits is 2332800, while the sum is 57.

The square root of 2198599581 is about 46889.2267050759. The cubic root of 2198599581 is about 1300.3154226730.

The spelling of 2198599581 in words is "two billion, one hundred ninety-eight million, five hundred ninety-nine thousand, five hundred eighty-one".