1161147047 has 2 divisors, whose sum is σ = 1161147048. Its totient is φ = 1161147046.

The previous prime is 1161146999. The next prime is 1161147083. The reversal of 1161147047 is 7407411611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161147047 - 2²² = 1156952743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161147947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580573523 + 580573524.

It is an arithmetic number, because the mean of its divisors is an integer number (580573524).

Almost surely, 2^1161147047 is an apocalyptic number.

1161147047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161147047 is an equidigital number, since it uses as much as digits as its factorization.

1161147047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 1161147047 is about 34075.6078008889. The cubic root of 1161147047 is about 1051.0637886954.

Adding to 1161147047 its reverse (7407411611), we get a palindrome (8568558658).

The spelling of 1161147047 in words is "one billion, one hundred sixty-one million, one hundred forty-seven thousand, forty-seven".