18001050 has 48 divisors (see below), whose sum is σ = 45747072. Its totient is φ = 4681600.

The previous prime is 18001033. The next prime is 18001057. The reversal of 18001050 is 5010081.

It is a happy number.

It is a super-2 number, since 2×18001050² = 648075602205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18001057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4687 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (953064).

Almost surely, 2^18001050 is an apocalyptic number.

18001050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18001050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22873536).

18001050 is an abundant number, since it is smaller than the sum of its proper divisors (27746022).

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

18001050 is a wasteful number, since it uses less digits than its factorization.

18001050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 18001050 is about 4242.7644290014. The cubic root of 18001050 is about 262.0792352079.

It can be divided in two parts, 1800 and 1050, that added together give a triangular number (2850 = T₇₅).

The spelling of 18001050 in words is "eighteen million, one thousand, fifty".