18478547001 has 36 divisors (see below), whose sum is σ = 29586528192. Its totient is φ = 11090242944.

The previous prime is 18478546981. The next prime is 18478547023. The reversal of 18478547001 is 10074587481.

It is not a de Polignac number, because 18478547001 - 2⁷ = 18478546873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18478547081) 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 35 ways as a sum of consecutive naturals, for example, 94621 + ... + 214266.

Almost surely, 2^18478547001 is an apocalyptic number.

It is an amenable number.

18478547001 is a deficient number, since it is larger than the sum of its proper divisors (11107981191).

18478547001 is a wasteful number, since it uses less digits than its factorization.

18478547001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308950 (or 308930 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 18478547001 in words is "eighteen billion, four hundred seventy-eight million, five hundred forty-seven thousand, one".