1161320353 has 2 divisors, whose sum is σ = 1161320354. Its totient is φ = 1161320352.

The previous prime is 1161320297. The next prime is 1161320383. The reversal of 1161320353 is 3530231611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812079009 + 349241344 = 28497^2 + 18688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161320353 - 2¹³ = 1161312161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161320383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580660176 + 580660177.

It is an arithmetic number, because the mean of its divisors is an integer number (580660177).

Almost surely, 2^1161320353 is an apocalyptic number.

It is an amenable number.

1161320353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161320353 is an equidigital number, since it uses as much as digits as its factorization.

1161320353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1161320353 is about 34078.1506687203. The cubic root of 1161320353 is about 1051.1160779668.

Adding to 1161320353 its reverse (3530231611), we get a palindrome (4691551964).

The spelling of 1161320353 in words is "one billion, one hundred sixty-one million, three hundred twenty thousand, three hundred fifty-three".