385318673851 has 2 divisors, whose sum is σ = 385318673852. Its totient is φ = 385318673850.

The previous prime is 385318673849. The next prime is 385318673893. The reversal of 385318673851 is 158376813583.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (158376813583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385318673851 - 2¹ = 385318673849 is a prime.

It is a super-2 number, since 2×385318673851² (a number of 24 digits) contains 22 as substring.

Together with 385318673849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (385318673801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192659336925 + 192659336926.

It is an arithmetic number, because the mean of its divisors is an integer number (192659336926).

Almost surely, 2^385318673851 is an apocalyptic number.

385318673851 is a deficient number, since it is larger than the sum of its proper divisors (1).

385318673851 is an equidigital number, since it uses as much as digits as its factorization.

385318673851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 58.

The spelling of 385318673851 in words is "three hundred eighty-five billion, three hundred eighteen million, six hundred seventy-three thousand, eight hundred fifty-one".