2198390860 has 24 divisors (see below), whose sum is σ = 4617597600. Its totient is φ = 879170304.

The previous prime is 2198390813. The next prime is 2198390861. The reversal of 2198390860 is 680938912.

It is a self number, because there is not a number n which added to its sum of digits gives 2198390860.

It is not an unprimeable number, because it can be changed into a prime (2198390861) 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, 123652 + ... + 140308.

It is an arithmetic number, because the mean of its divisors is an integer number (192399900).

Almost surely, 2^2198390860 is an apocalyptic number.

2198390860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2198390860 is an abundant number, since it is smaller than the sum of its proper divisors (2419206740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2198390860 is a wasteful number, since it uses less digits than its factorization.

2198390860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23265 (or 23263 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 2198390860 is about 46887.0009704182. Note that the first 3 decimals coincide. The cubic root of 2198390860 is about 1300.2742734908.

The spelling of 2198390860 in words is "two billion, one hundred ninety-eight million, three hundred ninety thousand, eight hundred sixty".