2198863980 has 144 divisors (see below), whose sum is σ = 7212965760. Its totient is φ = 540094464.

The previous prime is 2198863973. The next prime is 2198863981. The reversal of 2198863980 is 893688912.

It is a happy number.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2198863981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136176 + ... + 151464.

It is an arithmetic number, because the mean of its divisors is an integer number (50090040).

Almost surely, 2^2198863980 is an apocalyptic number.

2198863980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2198863980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3606482880).

2198863980 is an abundant number, since it is smaller than the sum of its proper divisors (5014101780).

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

2198863980 is a wasteful number, since it uses less digits than its factorization.

2198863980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15368 (or 15363 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 2198863980 is about 46892.0460206206. The cubic root of 2198863980 is about 1300.3675449905.

The spelling of 2198863980 in words is "two billion, one hundred ninety-eight million, eight hundred sixty-three thousand, nine hundred eighty".