1165665105 has 48 divisors (see below), whose sum is σ = 2320194240. Its totient is φ = 535420800.

The previous prime is 1165665073. The next prime is 1165665119. The reversal of 1165665105 is 5015665611.

It is not a de Polignac number, because 1165665105 - 2⁵ = 1165665073 is a prime.

It is a super-2 number, since 2×1165665105² = 2717550274029322050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1165665105.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52566 + ... + 71375.

It is an arithmetic number, because the mean of its divisors is an integer number (48337380).

Almost surely, 2^1165665105 is an apocalyptic number.

1165665105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165665105 is a deficient number, since it is larger than the sum of its proper divisors (1154529135).

1165665105 is a wasteful number, since it uses less digits than its factorization.

1165665105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123982 (or 123979 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1165665105 is about 34141.8380436672. The cubic root of 1165665105 is about 1052.4252646177.

The spelling of 1165665105 in words is "one billion, one hundred sixty-five million, six hundred sixty-five thousand, one hundred five".