161108419 has 2 divisors, whose sum is σ = 161108420. Its totient is φ = 161108418.

The previous prime is 161108383. The next prime is 161108449. The reversal of 161108419 is 914801161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161108419 - 2⁹ = 161107907 is a prime.

It is a super-2 number, since 2×161108419² = 51911845345359122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161108449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80554209 + 80554210.

It is an arithmetic number, because the mean of its divisors is an integer number (80554210).

Almost surely, 2^161108419 is an apocalyptic number.

161108419 is a deficient number, since it is larger than the sum of its proper divisors (1).

161108419 is an equidigital number, since it uses as much as digits as its factorization.

161108419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 161108419 is about 12692.8491285448. The cubic root of 161108419 is about 544.1342695441.

The spelling of 161108419 in words is "one hundred sixty-one million, one hundred eight thousand, four hundred nineteen".