1105651161 has 8 divisors (see below), whose sum is σ = 1638001760. Its totient is φ = 737100756.

The previous prime is 1105651133. The next prime is 1105651207. The reversal of 1105651161 is 1611565011.

1105651161 is a `hidden beast` number, since 1 + 1 + 0 + 5 + 651 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 1105651161 - 2⁷ = 1105651033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 40950043 = 1105651161 / (1 + 1 + 0 + 5 + 6 + 5 + 1 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105651061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20474995 + ... + 20475048.

It is an arithmetic number, because the mean of its divisors is an integer number (204750220).

Almost surely, 2^1105651161 is an apocalyptic number.

It is an amenable number.

1105651161 is a deficient number, since it is larger than the sum of its proper divisors (532350599).

1105651161 is an equidigital number, since it uses as much as digits as its factorization.

1105651161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40950052 (or 40950046 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1105651161 is about 33251.3332213913. Note that the first 3 decimals coincide. The cubic root of 1105651161 is about 1034.0448486970.

The spelling of 1105651161 in words is "one billion, one hundred five million, six hundred fifty-one thousand, one hundred sixty-one".