2199543345 has 12 divisors (see below), whose sum is σ = 3812541876. Its totient is φ = 1173089760.

The previous prime is 2199543323. The next prime is 2199543347. The reversal of 2199543345 is 5433459912.

2199543345 is a `hidden beast` number, since 219 + 95 + 4 + 3 + 345 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 609447969 + 1590095376 = 24687^2 + 39876^2 .

It is not a de Polignac number, because 2199543345 - 2¹⁹ = 2199019057 is a prime.

It is a super-3 number, since 3×2199543345³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 48878741 = 2199543345 / (2 + 1 + 9 + 9 + 5 + 4 + 3 + 3 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2199543345.

It is not an unprimeable number, because it can be changed into a prime (2199543347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24439326 + ... + 24439415.

It is an arithmetic number, because the mean of its divisors is an integer number (317711823).

Almost surely, 2^2199543345 is an apocalyptic number.

It is an amenable number.

2199543345 is a deficient number, since it is larger than the sum of its proper divisors (1612998531).

2199543345 is a wasteful number, since it uses less digits than its factorization.

2199543345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48878752 (or 48878749 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 2199543345 is about 46899.2893869406. The cubic root of 2199543345 is about 1300.5014525051.

The spelling of 2199543345 in words is "two billion, one hundred ninety-nine million, five hundred forty-three thousand, three hundred forty-five".