1115762161 has 2 divisors, whose sum is σ = 1115762162. Its totient is φ = 1115762160.

The previous prime is 1115762147. The next prime is 1115762203. The reversal of 1115762161 is 1612675111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 926837136 + 188925025 = 30444^2 + 13745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115762161 - 2⁷ = 1115762033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115762101) 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, 557881080 + 557881081.

It is an arithmetic number, because the mean of its divisors is an integer number (557881081).

Almost surely, 2^1115762161 is an apocalyptic number.

It is an amenable number.

1115762161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115762161 is an equidigital number, since it uses as much as digits as its factorization.

1115762161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 31.

The square root of 1115762161 is about 33403.0262251791. The cubic root of 1115762161 is about 1037.1873461735.

The spelling of 1115762161 in words is "one billion, one hundred fifteen million, seven hundred sixty-two thousand, one hundred sixty-one".