161180953 has 2 divisors, whose sum is σ = 161180954. Its totient is φ = 161180952.

The previous prime is 161180947. The next prime is 161180977. The reversal of 161180953 is 359081161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111450249 + 49730704 = 10557^2 + 7052^2 .

It is a cyclic number.

It is not a de Polignac number, because 161180953 - 2⁹ = 161180441 is a prime.

It is not a weakly prime, because it can be changed into another prime (161180993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80590476 + 80590477.

It is an arithmetic number, because the mean of its divisors is an integer number (80590477).

Almost surely, 2^161180953 is an apocalyptic number.

It is an amenable number.

161180953 is a deficient number, since it is larger than the sum of its proper divisors (1).

161180953 is an equidigital number, since it uses as much as digits as its factorization.

161180953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 161180953 is about 12695.7060851297. The cubic root of 161180953 is about 544.2159170742.

The spelling of 161180953 in words is "one hundred sixty-one million, one hundred eighty thousand, nine hundred fifty-three".