385290863 has 2 divisors, whose sum is σ = 385290864. Its totient is φ = 385290862.

The previous prime is 385290859. The next prime is 385290881. The reversal of 385290863 is 368092583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385290863 - 2² = 385290859 is a prime.

It is a super-2 number, since 2×385290863² = 296898098222569538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385290163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192645431 + 192645432.

It is an arithmetic number, because the mean of its divisors is an integer number (192645432).

Almost surely, 2^385290863 is an apocalyptic number.

385290863 is a deficient number, since it is larger than the sum of its proper divisors (1).

385290863 is an equidigital number, since it uses as much as digits as its factorization.

385290863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 385290863 is about 19628.8273465330. The cubic root of 385290863 is about 727.6617892984.

The spelling of 385290863 in words is "three hundred eighty-five million, two hundred ninety thousand, eight hundred sixty-three".