161495941 has 2 divisors, whose sum is σ = 161495942. Its totient is φ = 161495940.

The previous prime is 161495909. The next prime is 161495951. The reversal of 161495941 is 149594161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141729025 + 19766916 = 11905^2 + 4446^2 .

It is an emirp because it is prime and its reverse (149594161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161495941 - 2⁵ = 161495909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161495894 and 161495903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161495951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80747970 + 80747971.

It is an arithmetic number, because the mean of its divisors is an integer number (80747971).

Almost surely, 2^161495941 is an apocalyptic number.

It is an amenable number.

161495941 is a deficient number, since it is larger than the sum of its proper divisors (1).

161495941 is an equidigital number, since it uses as much as digits as its factorization.

161495941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 161495941 is about 12708.1053269164. The cubic root of 161495941 is about 544.5701978464.

The spelling of 161495941 in words is "one hundred sixty-one million, four hundred ninety-five thousand, nine hundred forty-one".