808320381 has 32 divisors (see below), whose sum is σ = 1222041600. Its totient is φ = 470817600.

The previous prime is 808320379. The next prime is 808320391. The reversal of 808320381 is 183023808.

It is not a de Polignac number, because 808320381 - 2¹ = 808320379 is a prime.

It is a super-2 number, since 2×808320381² = 1306763676679970322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808320341) 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 in 31 ways as a sum of consecutive naturals, for example, 149776 + ... + 155078.

It is an arithmetic number, because the mean of its divisors is an integer number (38188800).

Almost surely, 2^808320381 is an apocalyptic number.

It is an amenable number.

808320381 is a deficient number, since it is larger than the sum of its proper divisors (413721219).

808320381 is a wasteful number, since it uses less digits than its factorization.

808320381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 808320381 is about 28430.9757307061. The cubic root of 808320381 is about 931.5249890365.

The spelling of 808320381 in words is "eight hundred eight million, three hundred twenty thousand, three hundred eighty-one".