384854681 has 2 divisors, whose sum is σ = 384854682. Its totient is φ = 384854680.

The previous prime is 384854663. The next prime is 384854707. The reversal of 384854681 is 186458483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356605456 + 28249225 = 18884^2 + 5315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384854681 is a prime.

It is a super-2 number, since 2×384854681² = 296226250975223522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (384854641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192427340 + 192427341.

It is an arithmetic number, because the mean of its divisors is an integer number (192427341).

Almost surely, 2^384854681 is an apocalyptic number.

It is an amenable number.

384854681 is a deficient number, since it is larger than the sum of its proper divisors (1).

384854681 is an equidigital number, since it uses as much as digits as its factorization.

384854681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 47.

The square root of 384854681 is about 19617.7134498392. The cubic root of 384854681 is about 727.3870939514.

The spelling of 384854681 in words is "three hundred eighty-four million, eight hundred fifty-four thousand, six hundred eighty-one".