673437109 has 2 divisors, whose sum is σ = 673437110. Its totient is φ = 673437108.

The previous prime is 673437097. The next prime is 673437143. The reversal of 673437109 is 901734376.

673437109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411968209 + 261468900 = 20297^2 + 16170^2 .

It is a cyclic number.

It is not a de Polignac number, because 673437109 - 2⁵ = 673437077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673437169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336718554 + 336718555.

It is an arithmetic number, because the mean of its divisors is an integer number (336718555).

Almost surely, 2^673437109 is an apocalyptic number.

It is an amenable number.

673437109 is a deficient number, since it is larger than the sum of its proper divisors (1).

673437109 is an equidigital number, since it uses as much as digits as its factorization.

673437109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 673437109 is about 25950.6668315094. Note that the first 3 decimals coincide. The cubic root of 673437109 is about 876.5277729295.

The spelling of 673437109 in words is "six hundred seventy-three million, four hundred thirty-seven thousand, one hundred nine".