1165645614 has 48 divisors (see below), whose sum is σ = 2716848000. Its totient is φ = 332435376.

The previous prime is 1165645583. The next prime is 1165645619. The reversal of 1165645614 is 4165465611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165645619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172797 + ... + 179415.

It is an arithmetic number, because the mean of its divisors is an integer number (56601000).

Almost surely, 2^1165645614 is an apocalyptic number.

1165645614 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165645614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358424000).

1165645614 is an abundant number, since it is smaller than the sum of its proper divisors (1551202386).

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

1165645614 is a wasteful number, since it uses less digits than its factorization.

1165645614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237 (or 7230 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1165645614 is about 34141.5526008997. The cubic root of 1165645614 is about 1052.4193987434.

The spelling of 1165645614 in words is "one billion, one hundred sixty-five million, six hundred forty-five thousand, six hundred fourteen".