161880119 has 2 divisors, whose sum is σ = 161880120. Its totient is φ = 161880118.

The previous prime is 161880113. The next prime is 161880139. The reversal of 161880119 is 911088161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161880119 is a prime.

It is a super-2 number, since 2×161880119² = 52410345854908322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161880113) 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, 80940059 + 80940060.

It is an arithmetic number, because the mean of its divisors is an integer number (80940060).

Almost surely, 2^161880119 is an apocalyptic number.

161880119 is a deficient number, since it is larger than the sum of its proper divisors (1).

161880119 is an equidigital number, since it uses as much as digits as its factorization.

161880119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 35.

The square root of 161880119 is about 12723.2118193481. The cubic root of 161880119 is about 545.0016766214.

The spelling of 161880119 in words is "one hundred sixty-one million, eight hundred eighty thousand, one hundred nineteen".