385836565819 has 2 divisors, whose sum is σ = 385836565820. Its totient is φ = 385836565818.

The previous prime is 385836565817. The next prime is 385836565831. The reversal of 385836565819 is 918565638583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385836565819 - 2¹ = 385836565817 is a prime.

It is a super-2 number, since 2×385836565819² (a number of 24 digits) contains 22 as substring.

Together with 385836565817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (385836565817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192918282909 + 192918282910.

It is an arithmetic number, because the mean of its divisors is an integer number (192918282910).

Almost surely, 2^385836565819 is an apocalyptic number.

385836565819 is a deficient number, since it is larger than the sum of its proper divisors (1).

385836565819 is an equidigital number, since it uses as much as digits as its factorization.

385836565819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624000, while the sum is 67.

The spelling of 385836565819 in words is "three hundred eighty-five billion, eight hundred thirty-six million, five hundred sixty-five thousand, eight hundred nineteen".