1811199368 has 16 divisors (see below), whose sum is σ = 3704726160. Its totient is φ = 823272400.

The previous prime is 1811199361. The next prime is 1811199371. The reversal of 1811199368 is 8639911181.

It is not an unprimeable number, because it can be changed into a prime (1811199361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10290818 + ... + 10290993.

It is an arithmetic number, because the mean of its divisors is an integer number (231545385).

Almost surely, 2^1811199368 is an apocalyptic number.

It is an amenable number.

1811199368 is an abundant number, since it is smaller than the sum of its proper divisors (1893526792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1811199368 is a wasteful number, since it uses less digits than its factorization.

1811199368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581828 (or 20581824 counting only the distinct ones).

The product of its digits is 93312, while the sum is 47.

The square root of 1811199368 is about 42558.1880253377. The cubic root of 1811199368 is about 1218.9580299793.

The spelling of 1811199368 in words is "one billion, eight hundred eleven million, one hundred ninety-nine thousand, three hundred sixty-eight".