1165663892 has 24 divisors (see below), whose sum is σ = 2057443752. Its totient is φ = 577843200.

The previous prime is 1165663879. The next prime is 1165663901. The reversal of 1165663892 is 2983665611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7214596 + 1158449296 = 2686^2 + 34036^2 .

It is a super-2 number, since 2×1165663892² = 2717544618225175328, which contains 22 as substring.

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, 253292 + ... + 257852.

It is an arithmetic number, because the mean of its divisors is an integer number (85726823).

Almost surely, 2^1165663892 is an apocalyptic number.

It is an amenable number.

1165663892 is a deficient number, since it is larger than the sum of its proper divisors (891779860).

1165663892 is a wasteful number, since it uses less digits than its factorization.

1165663892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5099 (or 5097 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 1165663892 is about 34141.8202795340. The cubic root of 1165663892 is about 1052.4248995637.

The spelling of 1165663892 in words is "one billion, one hundred sixty-five million, six hundred sixty-three thousand, eight hundred ninety-two".