2199198456 has 96 divisors (see below), whose sum is σ = 7330683360. Its totient is φ = 580006656.

The previous prime is 2199198437. The next prime is 2199198481. The reversal of 2199198456 is 6548919912.

2199198456 is a `hidden beast` number, since 2 + 19 + 91 + 98 + 456 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161275 + ... + 174378.

It is an arithmetic number, because the mean of its divisors is an integer number (76361285).

Almost surely, 2^2199198456 is an apocalyptic number.

2199198456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2199198456 is an abundant number, since it is smaller than the sum of its proper divisors (5131484904).

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

2199198456 is a wasteful number, since it uses less digits than its factorization.

2199198456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335685 (or 335678 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 2199198456 is about 46895.6123320722. The cubic root of 2199198456 is about 1300.4334759572.

The spelling of 2199198456 in words is "two billion, one hundred ninety-nine million, one hundred ninety-eight thousand, four hundred fifty-six".