1161610056 has 24 divisors (see below), whose sum is σ = 3146027430. Its totient is φ = 387203328.

The previous prime is 1161610019. The next prime is 1161610097. The reversal of 1161610056 is 6500161611.

It can be written as a sum of positive squares in only one way, i.e., 1015441956 + 146168100 = 31866^2 + 12090^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8066665 + ... + 8066808.

Almost surely, 2^1161610056 is an apocalyptic number.

It is an amenable number.

1161610056 is an abundant number, since it is smaller than the sum of its proper divisors (1984417374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161610056 is a wasteful number, since it uses less digits than its factorization.

1161610056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16133485 (or 16133478 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1161610056 is about 34082.4009717625. The cubic root of 1161610056 is about 1051.2034745130.

Adding to 1161610056 its reverse (6500161611), we get a palindrome (7661771667).

The spelling of 1161610056 in words is "one billion, one hundred sixty-one million, six hundred ten thousand, fifty-six".