1165605504 has 64 divisors (see below), whose sum is σ = 3538453440. Its totient is φ = 333029376.

The previous prime is 1165605491. The next prime is 1165605517. The reversal of 1165605504 is 4055065611.

It is an interprime number because it is at equal distance from previous prime (1165605491) and next prime (1165605517).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214129 + ... + 219504.

It is an arithmetic number, because the mean of its divisors is an integer number (55288335).

Almost surely, 2^1165605504 is an apocalyptic number.

1165605504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1165605504 is an abundant number, since it is smaller than the sum of its proper divisors (2372847936).

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

1165605504 is an equidigital number, since it uses as much as digits as its factorization.

1165605504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433657 (or 433645 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 1165605504 is about 34140.9651884653. The cubic root of 1165605504 is about 1052.4073273139.

The spelling of 1165605504 in words is "one billion, one hundred sixty-five million, six hundred five thousand, five hundred four".