385512973 has 2 divisors, whose sum is σ = 385512974. Its totient is φ = 385512972.

The previous prime is 385512971. The next prime is 385512977. The reversal of 385512973 is 379215583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235376964 + 150136009 = 15342^2 + 12253^2 .

It is a cyclic number.

It is not a de Polignac number, because 385512973 - 2¹ = 385512971 is a prime.

Together with 385512971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385512971) 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, 192756486 + 192756487.

It is an arithmetic number, because the mean of its divisors is an integer number (192756487).

Almost surely, 2^385512973 is an apocalyptic number.

It is an amenable number.

385512973 is a deficient number, since it is larger than the sum of its proper divisors (1).

385512973 is an equidigital number, since it uses as much as digits as its factorization.

385512973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 385512973 is about 19634.4842814880. The cubic root of 385512973 is about 727.8015883686.

The spelling of 385512973 in words is "three hundred eighty-five million, five hundred twelve thousand, nine hundred seventy-three".