1171761361 has 3 divisors (see below), whose sum is σ = 1171795593. Its totient is φ = 1171727130.

The previous prime is 1171761341. The next prime is 1171761377. The reversal of 1171761361 is 1631671711.

The square root of 1171761361 is 34231.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1171761361 - 2⁷ = 1171761233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171761341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17116 + ... + 51346.

It is an arithmetic number, because the mean of its divisors is an integer number (390598531).

Almost surely, 2^1171761361 is an apocalyptic number.

1171761361 is the 34231-st square number.

1171761361 is the 17116-th centered octagonal number.

It is an amenable number.

1171761361 is a deficient number, since it is larger than the sum of its proper divisors (34232).

1171761361 is an frugal number, since it uses more digits than its factorization.

1171761361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68462 (or 34231 counting only the distinct ones).

The product of its digits is 5292, while the sum is 34.

The cubic root of 1171761361 is about 1054.2567516475.

The spelling of 1171761361 in words is "one billion, one hundred seventy-one million, seven hundred sixty-one thousand, three hundred sixty-one".