1165270566 has 16 divisors (see below), whose sum is σ = 2365326144. Its totient is φ = 382626024.

The previous prime is 1165270549. The next prime is 1165270583. The reversal of 1165270566 is 6650725611.

It is an interprime number because it is at equal distance from previous prime (1165270549) and next prime (1165270583).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448940 + ... + 1449743.

It is an arithmetic number, because the mean of its divisors is an integer number (147832884).

Almost surely, 2^1165270566 is an apocalyptic number.

1165270566 is an abundant number, since it is smaller than the sum of its proper divisors (1200055578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165270566 is a wasteful number, since it uses less digits than its factorization.

1165270566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898755.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1165270566 is about 34136.0596144312. The cubic root of 1165270566 is about 1052.3065141965.

The spelling of 1165270566 in words is "one billion, one hundred sixty-five million, two hundred seventy thousand, five hundred sixty-six".