161473349 has 2 divisors, whose sum is σ = 161473350. Its totient is φ = 161473348.

The previous prime is 161473339. The next prime is 161473373. The reversal of 161473349 is 943374161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140588449 + 20884900 = 11857^2 + 4570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161473349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161473339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80736674 + 80736675.

It is an arithmetic number, because the mean of its divisors is an integer number (80736675).

Almost surely, 2^161473349 is an apocalyptic number.

It is an amenable number.

161473349 is a deficient number, since it is larger than the sum of its proper divisors (1).

161473349 is an equidigital number, since it uses as much as digits as its factorization.

161473349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 161473349 is about 12707.2164143057. The cubic root of 161473349 is about 544.5448029798.

The spelling of 161473349 in words is "one hundred sixty-one million, four hundred seventy-three thousand, three hundred forty-nine".