18729004393 has 16 divisors (see below), whose sum is σ = 20856597696. Its totient is φ = 16675179840.

The previous prime is 18729004337. The next prime is 18729004417. The reversal of 18729004393 is 39340092781.

It is not a de Polignac number, because 18729004393 - 2¹⁷ = 18728873321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18724004393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54055 + ... + 200947.

It is an arithmetic number, because the mean of its divisors is an integer number (1303537356).

Almost surely, 2^18729004393 is an apocalyptic number.

It is an amenable number.

18729004393 is a deficient number, since it is larger than the sum of its proper divisors (2127593303).

18729004393 is a wasteful number, since it uses less digits than its factorization.

18729004393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147144.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 18729004393 in words is "eighteen billion, seven hundred twenty-nine million, four thousand, three hundred ninety-three".