873573109 has 2 divisors, whose sum is σ = 873573110. Its totient is φ = 873573108.

The previous prime is 873573059. The next prime is 873573157. The reversal of 873573109 is 901375378.

873573109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 775622500 + 97950609 = 27850^2 + 9897^2 .

It is a cyclic number.

It is not a de Polignac number, because 873573109 - 2⁷ = 873572981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873573199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436786554 + 436786555.

It is an arithmetic number, because the mean of its divisors is an integer number (436786555).

Almost surely, 2^873573109 is an apocalyptic number.

It is an amenable number.

873573109 is a deficient number, since it is larger than the sum of its proper divisors (1).

873573109 is an equidigital number, since it uses as much as digits as its factorization.

873573109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 873573109 is about 29556.2702146262. The cubic root of 873573109 is about 955.9453953190.

The spelling of 873573109 in words is "eight hundred seventy-three million, five hundred seventy-three thousand, one hundred nine".