1161743617 has 2 divisors, whose sum is σ = 1161743618. Its totient is φ = 1161743616.

The previous prime is 1161743587. The next prime is 1161743629. The reversal of 1161743617 is 7163471611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130035456 + 31708161 = 33616^2 + 5631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161743617 - 2¹⁹ = 1161219329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161743647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580871808 + 580871809.

It is an arithmetic number, because the mean of its divisors is an integer number (580871809).

Almost surely, 2^1161743617 is an apocalyptic number.

It is an amenable number.

1161743617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161743617 is an equidigital number, since it uses as much as digits as its factorization.

1161743617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 1161743617 is about 34084.3602991167. The cubic root of 1161743617 is about 1051.2437618153.

The spelling of 1161743617 in words is "one billion, one hundred sixty-one million, seven hundred forty-three thousand, six hundred seventeen".