1015116161 has 2 divisors, whose sum is σ = 1015116162. Its totient is φ = 1015116160.

The previous prime is 1015116149. The next prime is 1015116187. The reversal of 1015116161 is 1616115101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726625936 + 288490225 = 26956^2 + 16985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015116161 - 2¹⁴ = 1015099777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1015116131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507558080 + 507558081.

It is an arithmetic number, because the mean of its divisors is an integer number (507558081).

Almost surely, 2^1015116161 is an apocalyptic number.

It is an amenable number.

1015116161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015116161 is an equidigital number, since it uses as much as digits as its factorization.

1015116161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 23.

The square root of 1015116161 is about 31860.8876367247. The cubic root of 1015116161 is about 1005.0135427166.

The spelling of 1015116161 in words is "one billion, fifteen million, one hundred sixteen thousand, one hundred sixty-one".