1105208161 has 4 divisors (see below), whose sum is σ = 1105339824. Its totient is φ = 1105076500.

The previous prime is 1105208147. The next prime is 1105208173. The reversal of 1105208161 is 1618025011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1105208161 - 2⁵ = 1105208129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105208191) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 52315 + ... + 70336.

It is an arithmetic number, because the mean of its divisors is an integer number (276334956).

Almost surely, 2^1105208161 is an apocalyptic number.

It is an amenable number.

1105208161 is a deficient number, since it is larger than the sum of its proper divisors (131663).

1105208161 is an equidigital number, since it uses as much as digits as its factorization.

1105208161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131662.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 1105208161 is about 33244.6711669705. The cubic root of 1105208161 is about 1033.9067270551.

The spelling of 1105208161 in words is "one billion, one hundred five million, two hundred eight thousand, one hundred sixty-one".