1315111769 has 2 divisors, whose sum is σ = 1315111770. Its totient is φ = 1315111768.

The previous prime is 1315111673. The next prime is 1315111813. The reversal of 1315111769 is 9671115131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1272705625 + 42406144 = 35675^2 + 6512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315111769 - 2⁸ = 1315111513 is a prime.

It is a super-2 number, since 2×1315111769² = 3459037929924618722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315111069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657555884 + 657555885.

It is an arithmetic number, because the mean of its divisors is an integer number (657555885).

Almost surely, 2^1315111769 is an apocalyptic number.

It is an amenable number.

1315111769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315111769 is an equidigital number, since it uses as much as digits as its factorization.

1315111769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 35.

The square root of 1315111769 is about 36264.4697879343. The cubic root of 1315111769 is about 1095.6055445662.

The spelling of 1315111769 in words is "one billion, three hundred fifteen million, one hundred eleven thousand, seven hundred sixty-nine".