18003834036 has 36 divisors (see below), whose sum is σ = 47195238272. Its totient is φ = 6001277688.

The previous prime is 18003834031. The next prime is 18003834041. The reversal of 18003834036 is 63043830081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18003834031) and next prime (18003834041).

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18003834031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9260260 + ... + 9262203.

Almost surely, 2^18003834036 is an apocalyptic number.

It is an amenable number.

18003834036 is an abundant number, since it is smaller than the sum of its proper divisors (29191404236).

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

18003834036 is a wasteful number, since it uses less digits than its factorization.

18003834036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18522482 (or 18522468 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 18003834036 in words is "eighteen billion, three million, eight hundred thirty-four thousand, thirty-six".