18259905064 has 16 divisors (see below), whose sum is σ = 34239265920. Its totient is φ = 9129434160.

The previous prime is 18259905061. The next prime is 18259905073. The reversal of 18259905064 is 46050995281.

It is a junction number, because it is equal to n+sod(n) for n = 18259904999 and 18259905017.

It is not an unprimeable number, because it can be changed into a prime (18259905061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113899 + ... + 222469.

It is an arithmetic number, because the mean of its divisors is an integer number (2139954120).

Almost surely, 2^18259905064 is an apocalyptic number.

It is an amenable number.

18259905064 is a deficient number, since it is larger than the sum of its proper divisors (15979360856).

18259905064 is a wasteful number, since it uses less digits than its factorization.

18259905064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129600 (or 129596 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 18259905064 in words is "eighteen billion, two hundred fifty-nine million, nine hundred five thousand, sixty-four".