1159992761 has 2 divisors, whose sum is σ = 1159992762. Its totient is φ = 1159992760.

The previous prime is 1159992737. The next prime is 1159992767. The reversal of 1159992761 is 1672999511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 663371536 + 496621225 = 25756^2 + 22285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1159992761 - 2⁶ = 1159992697 is a prime.

It is a super-3 number, since 3×1159992761³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1159992767) by changing a digit.

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 as a sum of consecutive naturals, namely, 579996380 + 579996381.

It is an arithmetic number, because the mean of its divisors is an integer number (579996381).

Almost surely, 2^1159992761 is an apocalyptic number.

It is an amenable number.

1159992761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159992761 is an equidigital number, since it uses as much as digits as its factorization.

1159992761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 50.

The square root of 1159992761 is about 34058.6664595078. Note that the first 3 decimals coincide. The cubic root of 1159992761 is about 1050.7153888203.

The spelling of 1159992761 in words is "one billion, one hundred fifty-nine million, nine hundred ninety-two thousand, seven hundred sixty-one".