18027731352 has 32 divisors (see below), whose sum is σ = 45686720880. Its totient is φ = 5926924800.

The previous prime is 18027731333. The next prime is 18027731353. The reversal of 18027731352 is 25313772081.

It is a self number, because there is not a number n which added to its sum of digits gives 18027731352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18027731353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5143149 + ... + 5146652.

Almost surely, 2^18027731352 is an apocalyptic number.

18027731352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18027731352 is an abundant number, since it is smaller than the sum of its proper divisors (27658989528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18027731352 is a wasteful number, since it uses less digits than its factorization.

18027731352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10289883 (or 10289879 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 18027731352 in words is "eighteen billion, twenty-seven million, seven hundred thirty-one thousand, three hundred fifty-two".