1822812199 has 24 divisors (see below), whose sum is σ = 2129531472. Its totient is φ = 1553610240.

The previous prime is 1822812191. The next prime is 1822812209. The reversal of 1822812199 is 9912182281.

It is not a de Polignac number, because 1822812199 - 2³ = 1822812191 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822812191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146284 + ... + 158254.

It is an arithmetic number, because the mean of its divisors is an integer number (88730478).

Almost surely, 2^1822812199 is an apocalyptic number.

1822812199 is a deficient number, since it is larger than the sum of its proper divisors (306719273).

1822812199 is a wasteful number, since it uses less digits than its factorization.

1822812199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12067 (or 12054 counting only the distinct ones).

The product of its digits is 41472, while the sum is 43.

The square root of 1822812199 is about 42694.4047739279. The cubic root of 1822812199 is about 1221.5576715073.

The spelling of 1822812199 in words is "one billion, eight hundred twenty-two million, eight hundred twelve thousand, one hundred ninety-nine".