1673161447 has 4 divisors (see below), whose sum is σ = 1673381736. Its totient is φ = 1672941160.

The previous prime is 1673161429. The next prime is 1673161499. The reversal of 1673161447 is 7441613761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7441613761 = 523 ⋅14228707.

It is a cyclic number.

It is not a de Polignac number, because 1673161447 - 2¹⁹ = 1672637159 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673171447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98329 + ... + 114082.

It is an arithmetic number, because the mean of its divisors is an integer number (418345434).

Almost surely, 2^1673161447 is an apocalyptic number.

1673161447 is a deficient number, since it is larger than the sum of its proper divisors (220289).

1673161447 is an equidigital number, since it uses as much as digits as its factorization.

1673161447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220288.

The product of its digits is 84672, while the sum is 40.

The square root of 1673161447 is about 40904.2961924539. The cubic root of 1673161447 is about 1187.1691880287.

The spelling of 1673161447 in words is "one billion, six hundred seventy-three million, one hundred sixty-one thousand, four hundred forty-seven".