1081031609 has 8 divisors (see below), whose sum is σ = 1236370368. Its totient is φ = 925919280.

The previous prime is 1081031573. The next prime is 1081031639. The reversal of 1081031609 is 9061301801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081031609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081031639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46247 + ... + 65580.

It is an arithmetic number, because the mean of its divisors is an integer number (154546296).

Almost surely, 2^1081031609 is an apocalyptic number.

It is an amenable number.

1081031609 is a deficient number, since it is larger than the sum of its proper divisors (155338759).

1081031609 is a wasteful number, since it uses less digits than its factorization.

1081031609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113215.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1081031609 is about 32879.0451351617. The cubic root of 1081031609 is about 1026.3121356379.

The spelling of 1081031609 in words is "one billion, eighty-one million, thirty-one thousand, six hundred nine".