1169744561 has 8 divisors (see below), whose sum is σ = 1196878560. Its totient is φ = 1142854272.

The previous prime is 1169744531. The next prime is 1169744567. The reversal of 1169744561 is 1654479611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1169744561 - 2¹⁸ = 1169482417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1169744567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51200 + ... + 70433.

It is an arithmetic number, because the mean of its divisors is an integer number (149609820).

Almost surely, 2^1169744561 is an apocalyptic number.

It is an amenable number.

1169744561 is a deficient number, since it is larger than the sum of its proper divisors (27133999).

1169744561 is a wasteful number, since it uses less digits than its factorization.

1169744561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121855.

The product of its digits is 181440, while the sum is 44.

The square root of 1169744561 is about 34201.5286354280. The cubic root of 1169744561 is about 1053.6515527506.

The spelling of 1169744561 in words is "one billion, one hundred sixty-nine million, seven hundred forty-four thousand, five hundred sixty-one".