1165261747219 has 2 divisors, whose sum is σ = 1165261747220. Its totient is φ = 1165261747218.

The previous prime is 1165261747159. The next prime is 1165261747291. The reversal of 1165261747219 is 9127471625611.

Together with next prime (1165261747291) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1165261747219 - 2⁹ = 1165261746707 is a prime.

It is a super-2 number, since 2×1165261747219² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1165261747019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582630873609 + 582630873610.

It is an arithmetic number, because the mean of its divisors is an integer number (582630873610).

Almost surely, 2^{1165261747219} is an apocalyptic number.

1165261747219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165261747219 is an equidigital number, since it uses as much as digits as its factorization.

1165261747219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 52.

The spelling of 1165261747219 in words is "one trillion, one hundred sixty-five billion, two hundred sixty-one million, seven hundred forty-seven thousand, two hundred nineteen".