161413541 has 2 divisors, whose sum is σ = 161413542. Its totient is φ = 161413540.

The previous prime is 161413501. The next prime is 161413543. The reversal of 161413541 is 145314161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85636516 + 75777025 = 9254^2 + 8705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161413541 is a prime.

Together with 161413543, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161413541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161413543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80706770 + 80706771.

It is an arithmetic number, because the mean of its divisors is an integer number (80706771).

Almost surely, 2^161413541 is an apocalyptic number.

It is an amenable number.

161413541 is a deficient number, since it is larger than the sum of its proper divisors (1).

161413541 is an equidigital number, since it uses as much as digits as its factorization.

161413541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 161413541 is about 12704.8628878867. The cubic root of 161413541 is about 544.4775634889.

The spelling of 161413541 in words is "one hundred sixty-one million, four hundred thirteen thousand, five hundred forty-one".