18038440086 has 8 divisors (see below), whose sum is σ = 36076880184. Its totient is φ = 6012813360.

The previous prime is 18038440081. The next prime is 18038440103. The reversal of 18038440086 is 68004483081.

It is a sphenic number, since it is the product of 3 distinct primes.

18038440086 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038440081) 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, 1503203335 + ... + 1503203346.

It is an arithmetic number, because the mean of its divisors is an integer number (4509610023).

Almost surely, 2^18038440086 is an apocalyptic number.

18038440086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18038440086 is a wasteful number, since it uses less digits than its factorization.

18038440086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006406686.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 18038440086 in words is "eighteen billion, thirty-eight million, four hundred forty thousand, eighty-six".