1159544361 has 4 divisors (see below), whose sum is σ = 1546059152. Its totient is φ = 773029572.

The previous prime is 1159544359. The next prime is 1159544377. The reversal of 1159544361 is 1634459511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1159544361 - 2¹ = 1159544359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159544161) 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, 193257391 + ... + 193257396.

It is an arithmetic number, because the mean of its divisors is an integer number (386514788).

Almost surely, 2^1159544361 is an apocalyptic number.

It is an amenable number.

1159544361 is a deficient number, since it is larger than the sum of its proper divisors (386514791).

1159544361 is an equidigital number, since it uses as much as digits as its factorization.

1159544361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386514790.

The product of its digits is 64800, while the sum is 39.

The square root of 1159544361 is about 34052.0830640359. The cubic root of 1159544361 is about 1050.5799852453.

The spelling of 1159544361 in words is "one billion, one hundred fifty-nine million, five hundred forty-four thousand, three hundred sixty-one".