818876881 has 8 divisors (see below), whose sum is σ = 831767840. Its totient is φ = 806005728.

The previous prime is 818876831. The next prime is 818876897. The reversal of 818876881 is 188678818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 818876881 - 2⁹ = 818876369 is a prime.

It is a super-2 number, since 2×818876881² = 1341118692472576322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818876831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93565 + ... + 101941.

It is an arithmetic number, because the mean of its divisors is an integer number (103970980).

Almost surely, 2^818876881 is an apocalyptic number.

It is an amenable number.

818876881 is a deficient number, since it is larger than the sum of its proper divisors (12890959).

818876881 is a wasteful number, since it uses less digits than its factorization.

818876881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903.

The product of its digits is 1376256, while the sum is 55.

The square root of 818876881 is about 28616.0248986473. The cubic root of 818876881 is about 935.5626384761.

The spelling of 818876881 in words is "eight hundred eighteen million, eight hundred seventy-six thousand, eight hundred eighty-one".