1161617203 has 2 divisors, whose sum is σ = 1161617204. Its totient is φ = 1161617202.

The previous prime is 1161617159. The next prime is 1161617209. The reversal of 1161617203 is 3027161611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161617203 - 2⁹ = 1161616691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161617209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580808601 + 580808602.

It is an arithmetic number, because the mean of its divisors is an integer number (580808602).

Almost surely, 2^1161617203 is an apocalyptic number.

1161617203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161617203 is an equidigital number, since it uses as much as digits as its factorization.

1161617203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1161617203 is about 34082.5058204352. The cubic root of 1161617203 is about 1051.2056304102.

Adding to 1161617203 its reverse (3027161611), we get a palindrome (4188778814).

The spelling of 1161617203 in words is "one billion, one hundred sixty-one million, six hundred seventeen thousand, two hundred three".