1165042260 has 36 divisors (see below), whose sum is σ = 3533962068. Its totient is φ = 310677888.

The previous prime is 1165042223. The next prime is 1165042303. The reversal of 1165042260 is 622405611.

1165042260 is a `hidden beast` number, since 1 + 1 + 650 + 4 + 2 + 2 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 492573636 + 672468624 = 22194^2 + 25932^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3236049 + ... + 3236408.

It is an arithmetic number, because the mean of its divisors is an integer number (98165613).

Almost surely, 2^1165042260 is an apocalyptic number.

1165042260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165042260 is an abundant number, since it is smaller than the sum of its proper divisors (2368919808).

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

1165042260 is a wasteful number, since it uses less digits than its factorization.

1165042260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472472 (or 6472467 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1165042260 is about 34132.7153915419. The cubic root of 1165042260 is about 1052.2377852135.

Adding to 1165042260 its reverse (622405611), we get a palindrome (1787447871).

The spelling of 1165042260 in words is "one billion, one hundred sixty-five million, forty-two thousand, two hundred sixty".