385657673 has 2 divisors, whose sum is σ = 385657674. Its totient is φ = 385657672.

The previous prime is 385657667. The next prime is 385657681. The reversal of 385657673 is 376756583.

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., 211760704 + 173896969 = 14552^2 + 13187^2 .

It is a cyclic number.

It is not a de Polignac number, because 385657673 - 2⁸ = 385657417 is a prime.

It is not a weakly prime, because it can be changed into another prime (385657633) 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, 192828836 + 192828837.

It is an arithmetic number, because the mean of its divisors is an integer number (192828837).

Almost surely, 2^385657673 is an apocalyptic number.

It is an amenable number.

385657673 is a deficient number, since it is larger than the sum of its proper divisors (1).

385657673 is an equidigital number, since it uses as much as digits as its factorization.

385657673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 50.

The square root of 385657673 is about 19638.1687791912. The cubic root of 385657673 is about 727.8926356431.

The spelling of 385657673 in words is "three hundred eighty-five million, six hundred fifty-seven thousand, six hundred seventy-three".