1161764159 has 2 divisors, whose sum is σ = 1161764160. Its totient is φ = 1161764158.

The previous prime is 1161764141. The next prime is 1161764171. The reversal of 1161764159 is 9514671611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161764159 is a prime.

It is a super-2 number, since 2×1161764159² = 2699391922273954562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161764119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580882079 + 580882080.

It is an arithmetic number, because the mean of its divisors is an integer number (580882080).

Almost surely, 2^1161764159 is an apocalyptic number.

1161764159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161764159 is an equidigital number, since it uses as much as digits as its factorization.

1161764159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 1161764159 is about 34084.6616383381. The cubic root of 1161764159 is about 1051.2499578244.

The spelling of 1161764159 in words is "one billion, one hundred sixty-one million, seven hundred sixty-four thousand, one hundred fifty-nine".