1115300161 has 2 divisors, whose sum is σ = 1115300162. Its totient is φ = 1115300160.

The previous prime is 1115300111. The next prime is 1115300189. The reversal of 1115300161 is 1610035111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603635761 + 511664400 = 24569^2 + 22620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115300161 - 2²¹ = 1113203009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115300111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557650080 + 557650081.

It is an arithmetic number, because the mean of its divisors is an integer number (557650081).

Almost surely, 2^1115300161 is an apocalyptic number.

It is an amenable number.

1115300161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115300161 is an equidigital number, since it uses as much as digits as its factorization.

1115300161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1115300161 is about 33396.1099680786. The cubic root of 1115300161 is about 1037.0441714828.

Adding to 1115300161 its reverse (1610035111), we get a palindrome (2725335272).

The spelling of 1115300161 in words is "one billion, one hundred fifteen million, three hundred thousand, one hundred sixty-one".