1161423097 has 2 divisors, whose sum is σ = 1161423098. Its totient is φ = 1161423096.

The previous prime is 1161423073. The next prime is 1161423143. The reversal of 1161423097 is 7903241611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681418816 + 480004281 = 26104^2 + 21909^2 .

It is an emirp because it is prime and its reverse (7903241611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161423097 is a prime.

It is a super-2 number, since 2×1161423097² = 2697807220490142818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1161423037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580711548 + 580711549.

It is an arithmetic number, because the mean of its divisors is an integer number (580711549).

Almost surely, 2^1161423097 is an apocalyptic number.

It is an amenable number.

1161423097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161423097 is an equidigital number, since it uses as much as digits as its factorization.

1161423097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1161423097 is about 34079.6581115480. The cubic root of 1161423097 is about 1051.1470750657.

The spelling of 1161423097 in words is "one billion, one hundred sixty-one million, four hundred twenty-three thousand, ninety-seven".