161456411 has 2 divisors, whose sum is σ = 161456412. Its totient is φ = 161456410.

The previous prime is 161456387. The next prime is 161456441. The reversal of 161456411 is 114654161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161456411 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_9051518 and since 161456411 and 9051518 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (161456441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80728205 + 80728206.

It is an arithmetic number, because the mean of its divisors is an integer number (80728206).

Almost surely, 2^161456411 is an apocalyptic number.

161456411 is a deficient number, since it is larger than the sum of its proper divisors (1).

161456411 is an equidigital number, since it uses as much as digits as its factorization.

161456411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 161456411 is about 12706.5499251370. The cubic root of 161456411 is about 544.5257620205.

The spelling of 161456411 in words is "one hundred sixty-one million, four hundred fifty-six thousand, four hundred eleven".