384958381 has 2 divisors, whose sum is σ = 384958382. Its totient is φ = 384958380.

The previous prime is 384958363. The next prime is 384958393. The reversal of 384958381 is 183859483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383768100 + 1190281 = 19590^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 384958381 - 2⁷ = 384958253 is a prime.

It is a super-2 number, since 2×384958381² = 296385910204282322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384958331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192479190 + 192479191.

It is an arithmetic number, because the mean of its divisors is an integer number (192479191).

Almost surely, 2^384958381 is an apocalyptic number.

It is an amenable number.

384958381 is a deficient number, since it is larger than the sum of its proper divisors (1).

384958381 is an equidigital number, since it uses as much as digits as its factorization.

384958381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 384958381 is about 19620.3562913623. The cubic root of 384958381 is about 727.4524201394.

The spelling of 384958381 in words is "three hundred eighty-four million, nine hundred fifty-eight thousand, three hundred eighty-one".