385818019 has 2 divisors, whose sum is σ = 385818020. Its totient is φ = 385818018.

The previous prime is 385818011. The next prime is 385818023. The reversal of 385818019 is 910818583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385818019 - 2³ = 385818011 is a prime.

It is a super-2 number, since 2×385818019² = 297711087570168722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385818011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192909009 + 192909010.

It is an arithmetic number, because the mean of its divisors is an integer number (192909010).

Almost surely, 2^385818019 is an apocalyptic number.

385818019 is a deficient number, since it is larger than the sum of its proper divisors (1).

385818019 is an equidigital number, since it uses as much as digits as its factorization.

385818019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 385818019 is about 19642.2508638903. The cubic root of 385818019 is about 727.9935010036.

The spelling of 385818019 in words is "three hundred eighty-five million, eight hundred eighteen thousand, nineteen".