18001896 has 48 divisors (see below), whose sum is σ = 49476000. Its totient is φ = 5454240.

The previous prime is 18001891. The next prime is 18001901. The reversal of 18001896 is 69810081.

It is an interprime number because it is at equal distance from previous prime (18001891) and next prime (18001901).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (18001891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 6003.

It is an arithmetic number, because the mean of its divisors is an integer number (1030750).

Almost surely, 2^18001896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18001896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24738000).

18001896 is an abundant number, since it is smaller than the sum of its proper divisors (31474104).

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

18001896 is a wasteful number, since it uses less digits than its factorization.

18001896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230 (or 6215 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18001896 is about 4242.8641269784. The cubic root of 18001896 is about 262.0833408121.

The spelling of 18001896 in words is "eighteen million, one thousand, eight hundred ninety-six".