1165655160 has 96 divisors (see below), whose sum is σ = 3809754000. Its totient is φ = 309087744.

The previous prime is 1165655083. The next prime is 1165655171. The reversal of 1165655160 is 615565611.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 55396 + ... + 73484.

Almost surely, 2^1165655160 is an apocalyptic number.

1165655160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165655160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1904877000).

1165655160 is an abundant number, since it is smaller than the sum of its proper divisors (2644098840).

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

1165655160 is a wasteful number, since it uses less digits than its factorization.

1165655160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18285 (or 18278 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1165655160 is about 34141.6924009341. The cubic root of 1165655160 is about 1052.4222716486.

The spelling of 1165655160 in words is "one billion, one hundred sixty-five million, six hundred fifty-five thousand, one hundred sixty".