1101161605 has 8 divisors (see below), whose sum is σ = 1321755264. Its totient is φ = 880688400.

The previous prime is 1101161599. The next prime is 1101161627. The reversal of 1101161605 is 5061611011.

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

It is not a de Polignac number, because 1101161605 - 2³ = 1101161597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8601 + ... + 47710.

It is an arithmetic number, because the mean of its divisors is an integer number (165219408).

Almost surely, 2^1101161605 is an apocalyptic number.

It is an amenable number.

1101161605 is a deficient number, since it is larger than the sum of its proper divisors (220593659).

1101161605 is an equidigital number, since it uses as much as digits as its factorization.

1101161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60227.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1101161605 is about 33183.7551371149. The cubic root of 1101161605 is about 1032.6433517913.

Adding to 1101161605 its reverse (5061611011), we get a palindrome (6162772616).

The spelling of 1101161605 in words is "one billion, one hundred one million, one hundred sixty-one thousand, six hundred five".