1165223605 has 64 divisors (see below), whose sum is σ = 1833753600. Its totient is φ = 689762304.

The previous prime is 1165223597. The next prime is 1165223617. The reversal of 1165223605 is 5063225611.

It is not a de Polignac number, because 1165223605 - 2³ = 1165223597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1538887 + ... + 1539643.

It is an arithmetic number, because the mean of its divisors is an integer number (28652400).

Almost surely, 2^1165223605 is an apocalyptic number.

It is an amenable number.

1165223605 is a deficient number, since it is larger than the sum of its proper divisors (668529995).

1165223605 is a wasteful number, since it uses less digits than its factorization.

1165223605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1165223605 is about 34135.3717571671. The cubic root of 1165223605 is about 1052.2923778430.

The spelling of 1165223605 in words is "one billion, one hundred sixty-five million, two hundred twenty-three thousand, six hundred five".