18510084393 has 24 divisors (see below), whose sum is σ = 25328100000. Its totient is φ = 12024165120.

The previous prime is 18510084377. The next prime is 18510084421. The reversal of 18510084393 is 39348001581.

It is not a de Polignac number, because 18510084393 - 2⁴ = 18510084377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18510085393) 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 23 ways as a sum of consecutive naturals, for example, 5288358 + ... + 5291856.

It is an arithmetic number, because the mean of its divisors is an integer number (1055337500).

Almost surely, 2^18510084393 is an apocalyptic number.

It is an amenable number.

18510084393 is a deficient number, since it is larger than the sum of its proper divisors (6818015607).

18510084393 is a wasteful number, since it uses less digits than its factorization.

18510084393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 4592 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 18510084393 in words is "eighteen billion, five hundred ten million, eighty-four thousand, three hundred ninety-three".