1161165344 has 24 divisors (see below), whose sum is σ = 2301396300. Its totient is φ = 576683776.

The previous prime is 1161165329. The next prime is 1161165347. The reversal of 1161165344 is 4435611611.

It can be written as a sum of positive squares in 2 ways, for example, as 1141628944 + 19536400 = 33788^2 + 4420^2 .

It is a super-2 number, since 2×1161165344² = 2696609912213276672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1161165344.

It is not an unprimeable number, because it can be changed into a prime (1161165347) 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, 116999 + ... + 126534.

Almost surely, 2^1161165344 is an apocalyptic number.

It is an amenable number.

1161165344 is a deficient number, since it is larger than the sum of its proper divisors (1140230956).

1161165344 is a wasteful number, since it uses less digits than its factorization.

1161165344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243692 (or 243684 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 1161165344 is about 34075.8762763337. The cubic root of 1161165344 is about 1051.0693094470.

Adding to 1161165344 its reverse (4435611611), we get a palindrome (5596776955).

The spelling of 1161165344 in words is "one billion, one hundred sixty-one million, one hundred sixty-five thousand, three hundred forty-four".