852668381 has 2 divisors, whose sum is σ = 852668382. Its totient is φ = 852668380.

The previous prime is 852668359. The next prime is 852668429. The reversal of 852668381 is 183866258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 852348025 + 320356 = 29195^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 852668381 - 2⁶ = 852668317 is a prime.

It is a super-2 number, since 2×852668381² = 1454086735914322322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852658381) 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, 426334190 + 426334191.

It is an arithmetic number, because the mean of its divisors is an integer number (426334191).

Almost surely, 2^852668381 is an apocalyptic number.

It is an amenable number.

852668381 is a deficient number, since it is larger than the sum of its proper divisors (1).

852668381 is an equidigital number, since it uses as much as digits as its factorization.

852668381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 47.

The square root of 852668381 is about 29200.4859719834. The cubic root of 852668381 is about 948.2584458731.

The spelling of 852668381 in words is "eight hundred fifty-two million, six hundred sixty-eight thousand, three hundred eighty-one".