978348863 has 2 divisors, whose sum is σ = 978348864. Its totient is φ = 978348862.

The previous prime is 978348853. The next prime is 978348883. The reversal of 978348863 is 368843879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978348863 - 2⁸ = 978348607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978348799 and 978348808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978348823) 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, 489174431 + 489174432.

It is an arithmetic number, because the mean of its divisors is an integer number (489174432).

Almost surely, 2^978348863 is an apocalyptic number.

978348863 is a deficient number, since it is larger than the sum of its proper divisors (1).

978348863 is an equidigital number, since it uses as much as digits as its factorization.

978348863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 56.

The square root of 978348863 is about 31278.5687492251. The cubic root of 978348863 is about 992.7302328873.

The spelling of 978348863 in words is "nine hundred seventy-eight million, three hundred forty-eight thousand, eight hundred sixty-three".