1165114521 has 12 divisors (see below), whose sum is σ = 1683245460. Its totient is φ = 776603520.

The previous prime is 1165114441. The next prime is 1165114543. The reversal of 1165114521 is 1254115611.

1165114521 is a `hidden beast` number, since 1 + 1 + 651 + 1 + 4 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1069290000 + 95824521 = 32700^2 + 9789^2 .

It is not a de Polignac number, because 1165114521 - 2⁹ = 1165114009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1165114721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76165 + ... + 90173.

It is an arithmetic number, because the mean of its divisors is an integer number (140270455).

Almost surely, 2^1165114521 is an apocalyptic number.

It is an amenable number.

1165114521 is a deficient number, since it is larger than the sum of its proper divisors (518130939).

1165114521 is a wasteful number, since it uses less digits than its factorization.

1165114521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23256 (or 23253 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1165114521 is about 34133.7739050343. The cubic root of 1165114521 is about 1052.2595395553.

The spelling of 1165114521 in words is "one billion, one hundred sixty-five million, one hundred fourteen thousand, five hundred twenty-one".