878841137 has 2 divisors, whose sum is σ = 878841138. Its totient is φ = 878841136.

The previous prime is 878841121. The next prime is 878841149. The reversal of 878841137 is 731148878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 847042816 + 31798321 = 29104^2 + 5639^2 .

It is a cyclic number.

It is not a de Polignac number, because 878841137 - 2⁴ = 878841121 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 878841091 and 878841100.

It is not a weakly prime, because it can be changed into another prime (878841107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439420568 + 439420569.

It is an arithmetic number, because the mean of its divisors is an integer number (439420569).

Almost surely, 2^878841137 is an apocalyptic number.

It is an amenable number.

878841137 is a deficient number, since it is larger than the sum of its proper divisors (1).

878841137 is an equidigital number, since it uses as much as digits as its factorization.

878841137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 47.

The square root of 878841137 is about 29645.2548816838. The cubic root of 878841137 is about 957.8631351730.

The spelling of 878841137 in words is "eight hundred seventy-eight million, eight hundred forty-one thousand, one hundred thirty-seven".