385163929 has 2 divisors, whose sum is σ = 385163930. Its totient is φ = 385163928.

The previous prime is 385163927. The next prime is 385163939. The reversal of 385163929 is 929361583.

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., 244859904 + 140304025 = 15648^2 + 11845^2 .

It is an emirp because it is prime and its reverse (929361583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385163929 - 2¹ = 385163927 is a prime.

Together with 385163927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (385163927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192581964 + 192581965.

It is an arithmetic number, because the mean of its divisors is an integer number (192581965).

Almost surely, 2^385163929 is an apocalyptic number.

It is an amenable number.

385163929 is a deficient number, since it is larger than the sum of its proper divisors (1).

385163929 is an equidigital number, since it uses as much as digits as its factorization.

385163929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 385163929 is about 19625.5937235030. The cubic root of 385163929 is about 727.5818711764.

The spelling of 385163929 in words is "three hundred eighty-five million, one hundred sixty-three thousand, nine hundred twenty-nine".