807871381 has 2 divisors, whose sum is σ = 807871382. Its totient is φ = 807871380.

The previous prime is 807871307. The next prime is 807871403. The reversal of 807871381 is 183178708.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806048881 + 1822500 = 28391^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 807871381 - 2¹⁵ = 807838613 is a prime.

It is a super-2 number, since 2×807871381² = 1305312336477694322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (807871081) 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, 403935690 + 403935691.

It is an arithmetic number, because the mean of its divisors is an integer number (403935691).

Almost surely, 2^807871381 is an apocalyptic number.

It is an amenable number.

807871381 is a deficient number, since it is larger than the sum of its proper divisors (1).

807871381 is an equidigital number, since it uses as much as digits as its factorization.

807871381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 43.

The square root of 807871381 is about 28423.0783167482. The cubic root of 807871381 is about 931.3524781539.

The spelling of 807871381 in words is "eight hundred seven million, eight hundred seventy-one thousand, three hundred eighty-one".