1165388064 has 48 divisors (see below), whose sum is σ = 3130297632. Its totient is φ = 379427328.

The previous prime is 1165388027. The next prime is 1165388069. The reversal of 1165388064 is 4608835611.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1165388069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 137029 + ... + 145284.

It is an arithmetic number, because the mean of its divisors is an integer number (65214534).

Almost surely, 2^1165388064 is an apocalyptic number.

It is an amenable number.

1165388064 is an abundant number, since it is smaller than the sum of its proper divisors (1964909568).

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

1165388064 is a wasteful number, since it uses less digits than its factorization.

1165388064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282369 (or 282361 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1165388064 is about 34137.7805956978. The cubic root of 1165388064 is about 1052.3418821642.

The spelling of 1165388064 in words is "one billion, one hundred sixty-five million, three hundred eighty-eight thousand, sixty-four".