815103161 has 2 divisors, whose sum is σ = 815103162. Its totient is φ = 815103160.

The previous prime is 815103151. The next prime is 815103193. The reversal of 815103161 is 161301518.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809743936 + 5359225 = 28456^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 815103161 - 2¹⁰ = 815102137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 815103161.

It is not a weakly prime, because it can be changed into another prime (815103151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407551580 + 407551581.

It is an arithmetic number, because the mean of its divisors is an integer number (407551581).

Almost surely, 2^815103161 is an apocalyptic number.

It is an amenable number.

815103161 is a deficient number, since it is larger than the sum of its proper divisors (1).

815103161 is an equidigital number, since it uses as much as digits as its factorization.

815103161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 815103161 is about 28550.0115761798. The cubic root of 815103161 is about 934.1232732272.

Adding to 815103161 its reverse (161301518), we get a palindrome (976404679).

The spelling of 815103161 in words is "eight hundred fifteen million, one hundred three thousand, one hundred sixty-one".