161193833 has 2 divisors, whose sum is σ = 161193834. Its totient is φ = 161193832.

The previous prime is 161193817. The next prime is 161193839. The reversal of 161193833 is 338391161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103388224 + 57805609 = 10168^2 + 7603^2 .

It is an emirp because it is prime and its reverse (338391161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161193833 - 2⁴ = 161193817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161193793 and 161193802.

It is not a weakly prime, because it can be changed into another prime (161193839) 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, 80596916 + 80596917.

It is an arithmetic number, because the mean of its divisors is an integer number (80596917).

Almost surely, 2^161193833 is an apocalyptic number.

It is an amenable number.

161193833 is a deficient number, since it is larger than the sum of its proper divisors (1).

161193833 is an equidigital number, since it uses as much as digits as its factorization.

161193833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 161193833 is about 12696.2133331163. The cubic root of 161193833 is about 544.2304128199.

The spelling of 161193833 in words is "one hundred sixty-one million, one hundred ninety-three thousand, eight hundred thirty-three".