1165117005 has 24 divisors (see below), whose sum is σ = 2174886168. Its totient is φ = 573595776.

The previous prime is 1165117001. The next prime is 1165117033. The reversal of 1165117005 is 5007115611.

It is a happy number.

1165117005 is a `hidden beast` number, since 1 + 1 + 651 + 1 + 7 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 161874729 + 1003242276 = 12723^2 + 31674^2 .

It is not a de Polignac number, because 1165117005 - 2² = 1165117001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1165117005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165117001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 995242 + ... + 996411.

It is an arithmetic number, because the mean of its divisors is an integer number (90620257).

Almost surely, 2^1165117005 is an apocalyptic number.

1165117005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165117005 is a deficient number, since it is larger than the sum of its proper divisors (1009769163).

1165117005 is a wasteful number, since it uses less digits than its factorization.

1165117005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991677 (or 1991674 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

The square root of 1165117005 is about 34133.8102912640. The cubic root of 1165117005 is about 1052.2602873532.

The spelling of 1165117005 in words is "one billion, one hundred sixty-five million, one hundred seventeen thousand, five".