18100350 has 144 divisors (see below), whose sum is σ = 53679600. Its totient is φ = 4354560.

The previous prime is 18100343. The next prime is 18100351. The reversal of 18100350 is 5300181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100351) 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 71 ways as a sum of consecutive naturals, for example, 247914 + ... + 247986.

It is an arithmetic number, because the mean of its divisors is an integer number (372775).

Almost surely, 2^18100350 is an apocalyptic number.

18100350 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 18100350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26839800).

18100350 is an abundant number, since it is smaller than the sum of its proper divisors (35579250).

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

18100350 is a wasteful number, since it uses less digits than its factorization.

18100350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 18100350 is about 4254.4506108310. The cubic root of 18100350 is about 262.5602582752.

The spelling of 18100350 in words is "eighteen million, one hundred thousand, three hundred fifty".