1223815199 has 8 divisors (see below), whose sum is σ = 1235468160. Its totient is φ = 1212176896.

The previous prime is 1223815189. The next prime is 1223815207. The reversal of 1223815199 is 9915183221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223815199 - 2⁴ = 1223815183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223815129) 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, 238034 + ... + 243120.

It is an arithmetic number, because the mean of its divisors is an integer number (154433520).

Almost surely, 2^1223815199 is an apocalyptic number.

1223815199 is a deficient number, since it is larger than the sum of its proper divisors (11652961).

1223815199 is a wasteful number, since it uses less digits than its factorization.

1223815199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329.

The product of its digits is 38880, while the sum is 41.

The square root of 1223815199 is about 34983.0701768727. The cubic root of 1223815199 is about 1069.6424108606.

The spelling of 1223815199 in words is "one billion, two hundred twenty-three million, eight hundred fifteen thousand, one hundred ninety-nine".