1109081 has 8 divisors (see below), whose sum is σ = 1142400. Its totient is φ = 1076400.

The previous prime is 1109057. The next prime is 1109113. The reversal of 1109081 is 1809011.

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

It is a cyclic number.

It is not a de Polignac number, because 1109081 - 2¹⁰ = 1108057 is a prime.

It is a super-2 number, since 2×1109081² = 2460121329122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109021) 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, 7910 + ... + 8048.

It is an arithmetic number, because the mean of its divisors is an integer number (142800).

2^1109081 is an apocalyptic number.

It is an amenable number.

1109081 is a deficient number, since it is larger than the sum of its proper divisors (33319).

1109081 is a wasteful number, since it uses less digits than its factorization.

1109081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1109081 is about 1053.1291468761. The cubic root of 1109081 is about 103.5112981357.

The spelling of 1109081 in words is "one million, one hundred nine thousand, eighty-one".