1673865073 has 2 divisors, whose sum is σ = 1673865074. Its totient is φ = 1673865072.

The previous prime is 1673865047. The next prime is 1673865091. The reversal of 1673865073 is 3705683761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249834609 + 424030464 = 35353^2 + 20592^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673865073 - 2²¹ = 1671767921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1673835073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836932536 + 836932537.

It is an arithmetic number, because the mean of its divisors is an integer number (836932537).

Almost surely, 2^1673865073 is an apocalyptic number.

It is an amenable number.

1673865073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673865073 is an equidigital number, since it uses as much as digits as its factorization.

1673865073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 1673865073 is about 40912.8961697898. The cubic root of 1673865073 is about 1187.3355808259.

The spelling of 1673865073 in words is "one billion, six hundred seventy-three million, eight hundred sixty-five thousand, seventy-three".