18478033426 has 16 divisors (see below), whose sum is σ = 27997913088. Its totient is φ = 9145438000.

The previous prime is 18478033393. The next prime is 18478033439. The reversal of 18478033426 is 62433087481.

It is an unprimeable number.

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, 1233441 + ... + 1248331.

It is an arithmetic number, because the mean of its divisors is an integer number (1749869568).

Almost surely, 2^18478033426 is an apocalyptic number.

18478033426 is a deficient number, since it is larger than the sum of its proper divisors (9519879662).

18478033426 is a wasteful number, since it uses less digits than its factorization.

18478033426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21137.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 18478033426 in words is "eighteen billion, four hundred seventy-eight million, thirty-three thousand, four hundred twenty-six".