868813381 has 4 divisors (see below), whose sum is σ = 874567264. Its totient is φ = 863059500.

The previous prime is 868813367. The next prime is 868813397. The reversal of 868813381 is 183318868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 868813381 - 2¹⁵ = 868780613 is a prime.

It is a super-2 number, since 2×868813381² = 1509673382009302322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868813081) 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 in 3 ways as a sum of consecutive naturals, for example, 2876715 + ... + 2877016.

It is an arithmetic number, because the mean of its divisors is an integer number (218641816).

Almost surely, 2^868813381 is an apocalyptic number.

It is an amenable number.

868813381 is a deficient number, since it is larger than the sum of its proper divisors (5753883).

868813381 is a wasteful number, since it uses less digits than its factorization.

868813381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753882.

The product of its digits is 221184, while the sum is 46.

The square root of 868813381 is about 29475.6404680204. The cubic root of 868813381 is about 954.2060526634.

The spelling of 868813381 in words is "eight hundred sixty-eight million, eight hundred thirteen thousand, three hundred eighty-one".