1197617165 has 4 divisors (see below), whose sum is σ = 1437140604. Its totient is φ = 958093728.

The previous prime is 1197617143. The next prime is 1197617171. The reversal of 1197617165 is 5617167911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5617167911 = 71 ⋅79115041.

It can be written as a sum of positive squares in 2 ways, for example, as 477553609 + 720063556 = 21853^2 + 26834^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197617165 - 2²⁰ = 1196568589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119761712 + ... + 119761721.

It is an arithmetic number, because the mean of its divisors is an integer number (359285151).

Almost surely, 2^1197617165 is an apocalyptic number.

It is an amenable number.

1197617165 is a deficient number, since it is larger than the sum of its proper divisors (239523439).

1197617165 is an equidigital number, since it uses as much as digits as its factorization.

1197617165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239523438.

The product of its digits is 79380, while the sum is 44.

The square root of 1197617165 is about 34606.6058000492. The cubic root of 1197617165 is about 1061.9547308762.

The spelling of 1197617165 in words is "one billion, one hundred ninety-seven million, six hundred seventeen thousand, one hundred sixty-five".