1822812099 has 4 divisors (see below), whose sum is σ = 2430416136. Its totient is φ = 1215208064.

The previous prime is 1822812091. The next prime is 1822812119. The reversal of 1822812099 is 9902182281.

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

It is a cyclic number.

It is not a de Polignac number, because 1822812099 - 2³ = 1822812091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1822812099.

It is not an unprimeable number, because it can be changed into a prime (1822812091) 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, 303802014 + ... + 303802019.

It is an arithmetic number, because the mean of its divisors is an integer number (607604034).

Almost surely, 2^1822812099 is an apocalyptic number.

1822812099 is a deficient number, since it is larger than the sum of its proper divisors (607604037).

1822812099 is an equidigital number, since it uses as much as digits as its factorization.

1822812099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607604036.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 1822812099 is about 42694.4036028143. The cubic root of 1822812099 is about 1221.5576491689.

The spelling of 1822812099 in words is "one billion, eight hundred twenty-two million, eight hundred twelve thousand, ninety-nine".