1101500161 has 2 divisors, whose sum is σ = 1101500162. Its totient is φ = 1101500160.

The previous prime is 1101500149. The next prime is 1101500203. The reversal of 1101500161 is 1610051011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831226561 + 270273600 = 28831^2 + 16440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101500161 - 2¹⁹ = 1100975873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101507161) 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, 550750080 + 550750081.

It is an arithmetic number, because the mean of its divisors is an integer number (550750081).

Almost surely, 2^1101500161 is an apocalyptic number.

It is an amenable number.

1101500161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101500161 is an equidigital number, since it uses as much as digits as its factorization.

1101500161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1101500161 is about 33188.8559760652. The cubic root of 1101500161 is about 1032.7491708881.

Adding to 1101500161 its reverse (1610051011), we get a palindrome (2711551172).

The spelling of 1101500161 in words is "one billion, one hundred one million, five hundred thousand, one hundred sixty-one".