1801086 has 64 divisors (see below), whose sum is σ = 4523520. Its totient is φ = 466560.

The previous prime is 1801073. The next prime is 1801091. The reversal of 1801086 is 6801081.

1801086 is nontrivially palindromic in base 11.

It is a Curzon number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29496 + ... + 29556.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2^1801086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261760).

1801086 is an abundant number, since it is smaller than the sum of its proper divisors (2722434).

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

1801086 is a wasteful number, since it uses less digits than its factorization.

1801086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1801086 is about 1342.0454537757. The cubic root of 1801086 is about 121.6684989612.

The spelling of 1801086 in words is "one million, eight hundred one thousand, eighty-six".