161472193 has 2 divisors, whose sum is σ = 161472194. Its totient is φ = 161472192.

The previous prime is 161472191. The next prime is 161472197. The reversal of 161472193 is 391274161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150601984 + 10870209 = 12272^2 + 3297^2 .

It is a cyclic number.

It is not a de Polignac number, because 161472193 - 2¹ = 161472191 is a prime.

It is a super-2 number, since 2×161472193² = 52146538224458498, which contains 22 as substring.

Together with 161472191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (161472191) 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, 80736096 + 80736097.

It is an arithmetic number, because the mean of its divisors is an integer number (80736097).

Almost surely, 2^161472193 is an apocalyptic number.

It is an amenable number.

161472193 is a deficient number, since it is larger than the sum of its proper divisors (1).

161472193 is an equidigital number, since it uses as much as digits as its factorization.

161472193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 161472193 is about 12707.1709282594. The cubic root of 161472193 is about 544.5435034975.

The spelling of 161472193 in words is "one hundred sixty-one million, four hundred seventy-two thousand, one hundred ninety-three".