161367673 has 2 divisors, whose sum is σ = 161367674. Its totient is φ = 161367672.

The previous prime is 161367659. The next prime is 161367709. The reversal of 161367673 is 376763161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159441129 + 1926544 = 12627^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 161367673 - 2¹³ = 161359481 is a prime.

It is not a weakly prime, because it can be changed into another prime (161367643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80683836 + 80683837.

It is an arithmetic number, because the mean of its divisors is an integer number (80683837).

Almost surely, 2^161367673 is an apocalyptic number.

It is an amenable number.

161367673 is a deficient number, since it is larger than the sum of its proper divisors (1).

161367673 is an equidigital number, since it uses as much as digits as its factorization.

161367673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 161367673 is about 12703.0576240526. The cubic root of 161367673 is about 544.4259848694.

The spelling of 161367673 in words is "one hundred sixty-one million, three hundred sixty-seven thousand, six hundred seventy-three".