1161500117 has 2 divisors, whose sum is σ = 1161500118. Its totient is φ = 1161500116.

The previous prime is 1161500099. The next prime is 1161500149. The reversal of 1161500117 is 7110051611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159674916 + 1825201 = 34054^2 + 1351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161500117 - 2¹⁰ = 1161499093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161500092 and 1161500101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161500167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580750058 + 580750059.

It is an arithmetic number, because the mean of its divisors is an integer number (580750059).

Almost surely, 2^1161500117 is an apocalyptic number.

It is an amenable number.

1161500117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161500117 is an equidigital number, since it uses as much as digits as its factorization.

1161500117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 23.

The square root of 1161500117 is about 34080.7880924136. The cubic root of 1161500117 is about 1051.1703102268.

Adding to 1161500117 its reverse (7110051611), we get a palindrome (8271551728).

The spelling of 1161500117 in words is "one billion, one hundred sixty-one million, five hundred thousand, one hundred seventeen".