1101985 has 8 divisors (see below), whose sum is σ = 1328040. Its totient is φ = 877824.

The previous prime is 1101967. The next prime is 1102001. The reversal of 1101985 is 5891011.

It can be written as a sum of positive squares in 4 ways, for example, as 77841 + 1024144 = 279^2 + 1012^2 .

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 1101985 - 2⁹ = 1101473 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1911 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (166005).

2^1101985 is an apocalyptic number.

It is an amenable number.

1101985 is a deficient number, since it is larger than the sum of its proper divisors (226055).

1101985 is an equidigital number, since it uses as much as digits as its factorization.

1101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1101985 is about 1049.7547332592. The cubic root of 1101985 is about 103.2900674460.

Adding to 1101985 its reverse (5891011), we get a palindrome (6992996).

The spelling of 1101985 in words is "one million, one hundred one thousand, nine hundred eighty-five".