2193624049 has 4 divisors (see below), whose sum is σ = 2235013236. Its totient is φ = 2152234864.

The previous prime is 2193624031. The next prime is 2193624079. The reversal of 2193624049 is 9404263912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 751143649 + 1442480400 = 27407^2 + 37980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193624049 - 2²³ = 2185235441 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193624079) 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, 20694514 + ... + 20694619.

It is an arithmetic number, because the mean of its divisors is an integer number (558753309).

Almost surely, 2^2193624049 is an apocalyptic number.

It is an amenable number.

2193624049 is a deficient number, since it is larger than the sum of its proper divisors (41389187).

2193624049 is an equidigital number, since it uses as much as digits as its factorization.

2193624049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41389186.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 2193624049 is about 46836.1404152819. The cubic root of 2193624049 is about 1299.3337905995. Note that the first 3 decimals are identical.

The spelling of 2193624049 in words is "two billion, one hundred ninety-three million, six hundred twenty-four thousand, forty-nine".