161499179 has 2 divisors, whose sum is σ = 161499180. Its totient is φ = 161499178.

The previous prime is 161499157. The next prime is 161499193. The reversal of 161499179 is 971994161.

It is a strong prime.

It is an emirp because it is prime and its reverse (971994161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161499179 - 2¹² = 161495083 is a prime.

It is a super-3 number, since 3×161499179³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (161499139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80749589 + 80749590.

It is an arithmetic number, because the mean of its divisors is an integer number (80749590).

Almost surely, 2^161499179 is an apocalyptic number.

161499179 is a deficient number, since it is larger than the sum of its proper divisors (1).

161499179 is an equidigital number, since it uses as much as digits as its factorization.

161499179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 47.

The square root of 161499179 is about 12708.2327252848. The cubic root of 161499179 is about 544.5738373735.

The spelling of 161499179 in words is "one hundred sixty-one million, four hundred ninety-nine thousand, one hundred seventy-nine".