18047533486 has 4 divisors (see below), whose sum is σ = 27071300232. Its totient is φ = 9023766742.

The previous prime is 18047533481. The next prime is 18047533499. The reversal of 18047533486 is 68433574081.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18047533481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4511883370 + ... + 4511883373.

It is an arithmetic number, because the mean of its divisors is an integer number (6767825058).

Almost surely, 2^18047533486 is an apocalyptic number.

18047533486 is a deficient number, since it is larger than the sum of its proper divisors (9023766746).

18047533486 is an equidigital number, since it uses as much as digits as its factorization.

18047533486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023766745.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 18047533486 in words is "eighteen billion, forty-seven million, five hundred thirty-three thousand, four hundred eighty-six".