878213113 has 2 divisors, whose sum is σ = 878213114. Its totient is φ = 878213112.

The previous prime is 878213099. The next prime is 878213137. The reversal of 878213113 is 311312878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 790003449 + 88209664 = 28107^2 + 9392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878213113 is a prime.

It is not a weakly prime, because it can be changed into another prime (878213813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439106556 + 439106557.

It is an arithmetic number, because the mean of its divisors is an integer number (439106557).

Almost surely, 2^878213113 is an apocalyptic number.

It is an amenable number.

878213113 is a deficient number, since it is larger than the sum of its proper divisors (1).

878213113 is an equidigital number, since it uses as much as digits as its factorization.

878213113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 878213113 is about 29634.6606695606. The cubic root of 878213113 is about 957.6349163054.

The spelling of 878213113 in words is "eight hundred seventy-eight million, two hundred thirteen thousand, one hundred thirteen".