1673865047 has 2 divisors, whose sum is σ = 1673865048. Its totient is φ = 1673865046.

The previous prime is 1673865031. The next prime is 1673865073. The reversal of 1673865047 is 7405683761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1673865047 - 2⁴ = 1673865031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1673864992 and 1673865010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673865247) 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, 836932523 + 836932524.

It is an arithmetic number, because the mean of its divisors is an integer number (836932524).

Almost surely, 2^1673865047 is an apocalyptic number.

1673865047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673865047 is an equidigital number, since it uses as much as digits as its factorization.

1673865047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 1673865047 is about 40912.8958520416. The cubic root of 1673865047 is about 1187.3355746783.

The spelling of 1673865047 in words is "one billion, six hundred seventy-three million, eight hundred sixty-five thousand, forty-seven".