1165580748 has 36 divisors (see below), whose sum is σ = 2958090408. Its totient is φ = 386976000.

The previous prime is 1165580743. The next prime is 1165580761. The reversal of 1165580748 is 8470855611.

1165580748 is a `hidden beast` number, since 1 + 1 + 65 + 580 + 7 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1165580743) 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, 55461 + ... + 73532.

It is an arithmetic number, because the mean of its divisors is an integer number (82169178).

Almost surely, 2^1165580748 is an apocalyptic number.

1165580748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1165580748 is an abundant number, since it is smaller than the sum of its proper divisors (1792509660).

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

1165580748 is a wasteful number, since it uses less digits than its factorization.

1165580748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129254 (or 129249 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 1165580748 is about 34140.6026308851. The cubic root of 1165580748 is about 1052.3998766570.

The spelling of 1165580748 in words is "one billion, one hundred sixty-five million, five hundred eighty thousand, seven hundred forty-eight".