1161105655 has 8 divisors (see below), whose sum is σ = 1393573392. Its totient is φ = 928720128.

The previous prime is 1161105653. The next prime is 1161105667. The reversal of 1161105655 is 5565011611.

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 1161105655 - 2¹ = 1161105653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161105653) 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, 16647 + ... + 50983.

It is an arithmetic number, because the mean of its divisors is an integer number (174196674).

Almost surely, 2^1161105655 is an apocalyptic number.

1161105655 is a deficient number, since it is larger than the sum of its proper divisors (232467737).

1161105655 is an equidigital number, since it uses as much as digits as its factorization.

1161105655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41105.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1161105655 is about 34075.0004402054. Note that the first 3 decimals coincide. The cubic root of 1161105655 is about 1051.0512992783.

The spelling of 1161105655 in words is "one billion, one hundred sixty-one million, one hundred five thousand, six hundred fifty-five".