146185973 has 2 divisors, whose sum is σ = 146185974. Its totient is φ = 146185972.

The previous prime is 146185967. The next prime is 146186039. The reversal of 146185973 is 379581641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78978769 + 67207204 = 8887^2 + 8198^2 .

It is a cyclic number.

It is not a de Polignac number, because 146185973 - 2⁶ = 146185909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146185073) 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, 73092986 + 73092987.

It is an arithmetic number, because the mean of its divisors is an integer number (73092987).

Almost surely, 2^146185973 is an apocalyptic number.

It is an amenable number.

146185973 is a deficient number, since it is larger than the sum of its proper divisors (1).

146185973 is an equidigital number, since it uses as much as digits as its factorization.

146185973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 146185973 is about 12090.7391420045. The cubic root of 146185973 is about 526.7872247557.

The spelling of 146185973 in words is "one hundred forty-six million, one hundred eighty-five thousand, nine hundred seventy-three".