878122351 has 2 divisors, whose sum is σ = 878122352. Its totient is φ = 878122350.

The previous prime is 878122339. The next prime is 878122387. The reversal of 878122351 is 153221878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878122351 - 2⁵ = 878122319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878122351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878122951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439061175 + 439061176.

It is an arithmetic number, because the mean of its divisors is an integer number (439061176).

Almost surely, 2^878122351 is an apocalyptic number.

878122351 is a deficient number, since it is larger than the sum of its proper divisors (1).

878122351 is an equidigital number, since it uses as much as digits as its factorization.

878122351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 878122351 is about 29633.1292812622. The cubic root of 878122351 is about 957.6019251277.

The spelling of 878122351 in words is "eight hundred seventy-eight million, one hundred twenty-two thousand, three hundred fifty-one".