161150791 has 2 divisors, whose sum is σ = 161150792. Its totient is φ = 161150790.

The previous prime is 161150789. The next prime is 161150809. The reversal of 161150791 is 197051161.

It is a weak prime.

It is an emirp because it is prime and its reverse (197051161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161150791 - 2¹ = 161150789 is a prime.

Together with 161150789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161151791) 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, 80575395 + 80575396.

It is an arithmetic number, because the mean of its divisors is an integer number (80575396).

Almost surely, 2^161150791 is an apocalyptic number.

161150791 is a deficient number, since it is larger than the sum of its proper divisors (1).

161150791 is an equidigital number, since it uses as much as digits as its factorization.

161150791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 161150791 is about 12694.5181476100. The cubic root of 161150791 is about 544.1819683472.

The spelling of 161150791 in words is "one hundred sixty-one million, one hundred fifty thousand, seven hundred ninety-one".