1872413173 has 2 divisors, whose sum is σ = 1872413174. Its totient is φ = 1872413172.

The previous prime is 1872413149. The next prime is 1872413209. The reversal of 1872413173 is 3713142781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034136964 + 838276209 = 32158^2 + 28953^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872413173 - 2¹⁷ = 1872282101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1872413143) 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 as a sum of consecutive naturals, namely, 936206586 + 936206587.

It is an arithmetic number, because the mean of its divisors is an integer number (936206587).

Almost surely, 2^1872413173 is an apocalyptic number.

It is an amenable number.

1872413173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872413173 is an equidigital number, since it uses as much as digits as its factorization.

1872413173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 1872413173 is about 43271.3897743070. The cubic root of 1872413173 is about 1232.5386949328.

The spelling of 1872413173 in words is "one billion, eight hundred seventy-two million, four hundred thirteen thousand, one hundred seventy-three".