18019953683 has 8 divisors (see below), whose sum is σ = 18201243936. Its totient is φ = 17838720000.

The previous prime is 18019953671. The next prime is 18019953691. The reversal of 18019953683 is 38635991081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18019953683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18019953613) 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 7 ways as a sum of consecutive naturals, for example, 960410 + ... + 978992.

It is an arithmetic number, because the mean of its divisors is an integer number (2275155492).

Almost surely, 2^18019953683 is an apocalyptic number.

18019953683 is a deficient number, since it is larger than the sum of its proper divisors (181290253).

18019953683 is a wasteful number, since it uses less digits than its factorization.

18019953683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28285.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 18019953683 in words is "eighteen billion, nineteen million, nine hundred fifty-three thousand, six hundred eighty-three".