1081590 has 32 divisors (see below), whose sum is σ = 2681856. Its totient is φ = 278880.

The previous prime is 1081583. The next prime is 1081631. The reversal of 1081590 is 951801.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (83808).

2^1081590 is an apocalyptic number.

1081590 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 1081590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340928).

1081590 is an abundant number, since it is smaller than the sum of its proper divisors (1600266).

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

1081590 is a wasteful number, since it uses less digits than its factorization.

1081590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

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

The square root of 1081590 is about 1039.9951922966. The cubic root of 1081590 is about 102.6488814041.

The spelling of 1081590 in words is "one million, eighty-one thousand, five hundred ninety".