2198518 has 8 divisors (see below), whose sum is σ = 3768912. Its totient is φ = 942216.

The previous prime is 2198513. The next prime is 2198527. The reversal of 2198518 is 8158912.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198513) 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, 78505 + ... + 78532.

It is an arithmetic number, because the mean of its divisors is an integer number (471114).

2^2198518 is an apocalyptic number.

2198518 is a deficient number, since it is larger than the sum of its proper divisors (1570394).

2198518 is a wasteful number, since it uses less digits than its factorization.

2198518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157046.

The product of its digits is 5760, while the sum is 34.

The square root of 2198518 is about 1482.7400311585. The cubic root of 2198518 is about 130.0299339353.

The spelling of 2198518 in words is "two million, one hundred ninety-eight thousand, five hundred eighteen".