1081523009 has 8 divisors (see below), whose sum is σ = 1275898368. Its totient is φ = 897115680.

The previous prime is 1081522991. The next prime is 1081523021. The reversal of 1081523009 is 9003251801.

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-1081523009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081523059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2491772 + ... + 2492205.

It is an arithmetic number, because the mean of its divisors is an integer number (159487296).

Almost surely, 2^1081523009 is an apocalyptic number.

It is an amenable number.

1081523009 is a deficient number, since it is larger than the sum of its proper divisors (194375359).

1081523009 is an equidigital number, since it uses as much as digits as its factorization.

1081523009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984015.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1081523009 is about 32886.5171308851. The cubic root of 1081523009 is about 1026.4676208804.

The spelling of 1081523009 in words is "one billion, eighty-one million, five hundred twenty-three thousand, nine".