161188411 has 2 divisors, whose sum is σ = 161188412. Its totient is φ = 161188410.

The previous prime is 161188403. The next prime is 161188429. The reversal of 161188411 is 114881161.

It is a weak prime.

It is an emirp because it is prime and its reverse (114881161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161188411 - 2³ = 161188403 is a prime.

It is not a weakly prime, because it can be changed into another prime (161188481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80594205 + 80594206.

It is an arithmetic number, because the mean of its divisors is an integer number (80594206).

Almost surely, 2^161188411 is an apocalyptic number.

161188411 is a deficient number, since it is larger than the sum of its proper divisors (1).

161188411 is an equidigital number, since it uses as much as digits as its factorization.

161188411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 31.

The square root of 161188411 is about 12695.9998030876. Note that the first 3 decimals coincide. The cubic root of 161188411 is about 544.2243107453.

The spelling of 161188411 in words is "one hundred sixty-one million, one hundred eighty-eight thousand, four hundred eleven".