1809150 has 48 divisors (see below), whose sum is σ = 5130624. Its totient is φ = 413280.

The previous prime is 1809149. The next prime is 1809163. The reversal of 1809150 is 519081.

It is a self number, because there is not a number n which added to its sum of digits gives 1809150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (106888).

2^1809150 is an apocalyptic number.

1809150 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 1809150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565312).

1809150 is an abundant number, since it is smaller than the sum of its proper divisors (3321474).

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

1809150 is a wasteful number, since it uses less digits than its factorization.

1809150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1809150 is about 1345.0464675988. The cubic root of 1809150 is about 121.8498107048.

The spelling of 1809150 in words is "one million, eight hundred nine thousand, one hundred fifty".