1165606544 has 20 divisors (see below), whose sum is σ = 2295386940. Its totient is φ = 573248640.

The previous prime is 1165606543. The next prime is 1165606553. The reversal of 1165606544 is 4456065611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 259596544 + 906010000 = 16112^2 + 30100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1165606498 and 1165606507.

It is not an unprimeable number, because it can be changed into a prime (1165606543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596159 + ... + 598110.

It is an arithmetic number, because the mean of its divisors is an integer number (114769347).

Almost surely, 2^1165606544 is an apocalyptic number.

It is an amenable number.

1165606544 is a deficient number, since it is larger than the sum of its proper divisors (1129780396).

1165606544 is a wasteful number, since it uses less digits than its factorization.

1165606544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194338 (or 1194332 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1165606544 is about 34140.9804194314. The cubic root of 1165606544 is about 1052.4076403139.

The spelling of 1165606544 in words is "one billion, one hundred sixty-five million, six hundred six thousand, five hundred forty-four".