1131164361 has 6 divisors (see below), whose sum is σ = 1633904090. Its totient is φ = 754109568.

The previous prime is 1131164351. The next prime is 1131164389. The reversal of 1131164361 is 1634611311.

1131164361 is a `hidden beast` number, since 1 + 1 + 3 + 11 + 643 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 982446336 + 148718025 = 31344^2 + 12195^2 .

It is not a de Polignac number, because 1131164361 - 2⁷ = 1131164233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131164341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62842456 + ... + 62842473.

Almost surely, 2^1131164361 is an apocalyptic number.

It is an amenable number.

1131164361 is a deficient number, since it is larger than the sum of its proper divisors (502739729).

1131164361 is a wasteful number, since it uses less digits than its factorization.

1131164361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125684935 (or 125684932 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1131164361 is about 33632.7869942412. The cubic root of 1131164361 is about 1041.9380654265.

Adding to 1131164361 its reverse (1634611311), we get a palindrome (2765775672).

The spelling of 1131164361 in words is "one billion, one hundred thirty-one million, one hundred sixty-four thousand, three hundred sixty-one".