1081959 has 4 divisors (see below), whose sum is σ = 1442616. Its totient is φ = 721304.

The previous prime is 1081939. The next prime is 1081979. The reversal of 1081959 is 9591801.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1081939) and next prime (1081979).

It is a cyclic number.

It is not a de Polignac number, because 1081959 - 2¹² = 1077863 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180324 + ... + 180329.

It is an arithmetic number, because the mean of its divisors is an integer number (360654).

2^1081959 is an apocalyptic number.

1081959 is a deficient number, since it is larger than the sum of its proper divisors (360657).

1081959 is an equidigital number, since it uses as much as digits as its factorization.

1081959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360656.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1081959 is about 1040.1725818344. The cubic root of 1081959 is about 102.6605534581.

It can be divided in two parts, 10819 and 59, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 1081959 in words is "one million, eighty-one thousand, nine hundred fifty-nine".