1165305000 has 80 divisors (see below), whose sum is σ = 3640459680. Its totient is φ = 310744000.

The previous prime is 1165304951. The next prime is 1165305013. The reversal of 1165305000 is 5035611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23844 + ... + 53843.

It is an arithmetic number, because the mean of its divisors is an integer number (45505746).

Almost surely, 2^1165305000 is an apocalyptic number.

1165305000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165305000 is an abundant number, since it is smaller than the sum of its proper divisors (2475154680).

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

1165305000 is an equidigital number, since it uses as much as digits as its factorization.

1165305000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77716 (or 77697 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1165305000 is about 34136.5639747178. The cubic root of 1165305000 is about 1052.3168793903.

The spelling of 1165305000 in words is "one billion, one hundred sixty-five million, three hundred five thousand".