161244799 has 2 divisors, whose sum is σ = 161244800. Its totient is φ = 161244798.

The previous prime is 161244793. The next prime is 161244803. The reversal of 161244799 is 997442161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161244799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161244793) 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, 80622399 + 80622400.

It is an arithmetic number, because the mean of its divisors is an integer number (80622400).

Almost surely, 2^161244799 is an apocalyptic number.

161244799 is a deficient number, since it is larger than the sum of its proper divisors (1).

161244799 is an equidigital number, since it uses as much as digits as its factorization.

161244799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 161244799 is about 12698.2203083739. The cubic root of 161244799 is about 544.2877647336.

The spelling of 161244799 in words is "one hundred sixty-one million, two hundred forty-four thousand, seven hundred ninety-nine".