18933598099 has 8 divisors (see below), whose sum is σ = 21047772032. Its totient is φ = 16913387520.

The previous prime is 18933598093. The next prime is 18933598109. The reversal of 18933598099 is 99089533981.

It is a happy number.

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 18933598099 - 2⁹ = 18933597587 is a prime.

It is a super-2 number, since 2×18933598099² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18933598099.

It is not an unprimeable number, because it can be changed into a prime (18933598093) 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 7 ways as a sum of consecutive naturals, for example, 23490414 + ... + 23491219.

It is an arithmetic number, because the mean of its divisors is an integer number (2630971504).

Almost surely, 2^18933598099 is an apocalyptic number.

18933598099 is a deficient number, since it is larger than the sum of its proper divisors (2114173933).

18933598099 is a wasteful number, since it uses less digits than its factorization.

18933598099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46981677.

The product of its (nonzero) digits is 18895680, while the sum is 64.

The spelling of 18933598099 in words is "eighteen billion, nine hundred thirty-three million, five hundred ninety-eight thousand, ninety-nine".