791148161 has 2 divisors, whose sum is σ = 791148162. Its totient is φ = 791148160.

The previous prime is 791148073. The next prime is 791148173. The reversal of 791148161 is 161841197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 752459761 + 38688400 = 27431^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 791148161 - 2²² = 786953857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (791148191) 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, 395574080 + 395574081.

It is an arithmetic number, because the mean of its divisors is an integer number (395574081).

Almost surely, 2^791148161 is an apocalyptic number.

It is an amenable number.

791148161 is a deficient number, since it is larger than the sum of its proper divisors (1).

791148161 is an equidigital number, since it uses as much as digits as its factorization.

791148161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 38.

The square root of 791148161 is about 28127.3560968677. The cubic root of 791148161 is about 924.8811772376.

The spelling of 791148161 in words is "seven hundred ninety-one million, one hundred forty-eight thousand, one hundred sixty-one".