1161323039 has 2 divisors, whose sum is σ = 1161323040. Its totient is φ = 1161323038.

The previous prime is 1161323017. The next prime is 1161323071. The reversal of 1161323039 is 9303231611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161323039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161323239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580661519 + 580661520.

It is an arithmetic number, because the mean of its divisors is an integer number (580661520).

Almost surely, 2^1161323039 is an apocalyptic number.

1161323039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161323039 is an equidigital number, since it uses as much as digits as its factorization.

1161323039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1161323039 is about 34078.1900781130. The cubic root of 1161323039 is about 1051.1168883363.

The spelling of 1161323039 in words is "one billion, one hundred sixty-one million, three hundred twenty-three thousand, thirty-nine".