1165526644 has 12 divisors (see below), whose sum is σ = 2048580100. Its totient is φ = 580218048.

The previous prime is 1165526641. The next prime is 1165526701. The reversal of 1165526644 is 4466255611.

It can be written as a sum of positive squares in 2 ways, for example, as 1143792400 + 21734244 = 33820^2 + 4662^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1165526597 and 1165526606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165526641) 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, 635289 + ... + 637120.

Almost surely, 2^1165526644 is an apocalyptic number.

It is an amenable number.

1165526644 is a deficient number, since it is larger than the sum of its proper divisors (883053456).

1165526644 is a wasteful number, since it uses less digits than its factorization.

1165526644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272642 (or 1272640 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 1165526644 is about 34139.8102513766. The cubic root of 1165526644 is about 1052.3835929506.

The spelling of 1165526644 in words is "one billion, one hundred sixty-five million, five hundred twenty-six thousand, six hundred forty-four".