878523381 has 8 divisors (see below), whose sum is σ = 1301516160. Its totient is φ = 585682236.

The previous prime is 878523337. The next prime is 878523383. The reversal of 878523381 is 183325878.

It is not a de Polignac number, because 878523381 - 2¹⁰ = 878522357 is a prime.

It is a super-2 number, since 2×878523381² = 1543606661927342322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878523383) 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, 16268925 + ... + 16268978.

It is an arithmetic number, because the mean of its divisors is an integer number (162689520).

Almost surely, 2^878523381 is an apocalyptic number.

It is an amenable number.

878523381 is a deficient number, since it is larger than the sum of its proper divisors (422992779).

878523381 is a wasteful number, since it uses less digits than its factorization.

878523381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32537912 (or 32537906 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 878523381 is about 29639.8950909075. The cubic root of 878523381 is about 957.7476787932.

The spelling of 878523381 in words is "eight hundred seventy-eight million, five hundred twenty-three thousand, three hundred eighty-one".