146428673 has 2 divisors, whose sum is σ = 146428674. Its totient is φ = 146428672.

The previous prime is 146428661. The next prime is 146428691. The reversal of 146428673 is 376824641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107578384 + 38850289 = 10372^2 + 6233^2 .

It is an emirp because it is prime and its reverse (376824641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146428673 - 2¹⁰ = 146427649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146428673.

It is not a weakly prime, because it can be changed into another prime (146428643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73214336 + 73214337.

It is an arithmetic number, because the mean of its divisors is an integer number (73214337).

Almost surely, 2^146428673 is an apocalyptic number.

It is an amenable number.

146428673 is a deficient number, since it is larger than the sum of its proper divisors (1).

146428673 is an equidigital number, since it uses as much as digits as its factorization.

146428673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 146428673 is about 12100.7715869692. The cubic root of 146428673 is about 527.0785900820.

The spelling of 146428673 in words is "one hundred forty-six million, four hundred twenty-eight thousand, six hundred seventy-three".