878134903 has 2 divisors, whose sum is σ = 878134904. Its totient is φ = 878134902.

The previous prime is 878134879. The next prime is 878134919. The reversal of 878134903 is 309431878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878134903 - 2⁹ = 878134391 is a prime.

It is a super-2 number, since 2×878134903² = 1542241815733638818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 878134903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878134403) 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, 439067451 + 439067452.

It is an arithmetic number, because the mean of its divisors is an integer number (439067452).

Almost surely, 2^878134903 is an apocalyptic number.

878134903 is a deficient number, since it is larger than the sum of its proper divisors (1).

878134903 is an equidigital number, since it uses as much as digits as its factorization.

878134903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 878134903 is about 29633.3410704902. The cubic root of 878134903 is about 957.6064878032.

The spelling of 878134903 in words is "eight hundred seventy-eight million, one hundred thirty-four thousand, nine hundred three".