18199220530 has 32 divisors (see below), whose sum is σ = 33975710208. Its totient is φ = 7011446400.

The previous prime is 18199220521. The next prime is 18199220531. The reversal of 18199220530 is 3502299181.

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 not an unprimeable number, because it can be changed into a prime (18199220531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73707 + ... + 204526.

It is an arithmetic number, because the mean of its divisors is an integer number (1061740944).

Almost surely, 2^18199220530 is an apocalyptic number.

18199220530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18199220530 is a deficient number, since it is larger than the sum of its proper divisors (15776489678).

18199220530 is a wasteful number, since it uses less digits than its factorization.

18199220530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278482.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 18199220530 in words is "eighteen billion, one hundred ninety-nine million, two hundred twenty thousand, five hundred thirty".