385963811 has 2 divisors, whose sum is σ = 385963812. Its totient is φ = 385963810.

The previous prime is 385963783. The next prime is 385963819. The reversal of 385963811 is 118369583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385963811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385963819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192981905 + 192981906.

It is an arithmetic number, because the mean of its divisors is an integer number (192981906).

Almost surely, 2^385963811 is an apocalyptic number.

385963811 is a deficient number, since it is larger than the sum of its proper divisors (1).

385963811 is an equidigital number, since it uses as much as digits as its factorization.

385963811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 385963811 is about 19645.9616970002. The cubic root of 385963811 is about 728.0851869431.

The spelling of 385963811 in words is "three hundred eighty-five million, nine hundred sixty-three thousand, eight hundred eleven".