18700957793 has 32 divisors (see below), whose sum is σ = 22704979968. Its totient is φ = 15065294400.

The previous prime is 18700957789. The next prime is 18700957811. The reversal of 18700957793 is 39775900781.

It is a cyclic number.

It is not a de Polignac number, because 18700957793 - 2² = 18700957789 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18700957703) 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 31 ways as a sum of consecutive naturals, for example, 1329071 + ... + 1343067.

It is an arithmetic number, because the mean of its divisors is an integer number (709530624).

Almost surely, 2^18700957793 is an apocalyptic number.

It is an amenable number.

18700957793 is a deficient number, since it is larger than the sum of its proper divisors (4004022175).

18700957793 is a wasteful number, since it uses less digits than its factorization.

18700957793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14213.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 18700957793 in words is "eighteen billion, seven hundred million, nine hundred fifty-seven thousand, seven hundred ninety-three".