978937863 has 8 divisors (see below), whose sum is σ = 1306532976. Its totient is φ = 651984000.

The previous prime is 978937859. The next prime is 978937867. The reversal of 978937863 is 368739879.

It is an interprime number because it is at equal distance from previous prime (978937859) and next prime (978937867).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 978937863 - 2² = 978937859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978937797 and 978937806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978937867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156738 + ... + 162863.

It is an arithmetic number, because the mean of its divisors is an integer number (163316622).

Almost surely, 2^978937863 is an apocalyptic number.

978937863 is a deficient number, since it is larger than the sum of its proper divisors (327595113).

978937863 is a wasteful number, since it uses less digits than its factorization.

978937863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320625.

The product of its digits is 13716864, while the sum is 60.

The square root of 978937863 is about 31287.9827250016. The cubic root of 978937863 is about 992.9294122831.

The spelling of 978937863 in words is "nine hundred seventy-eight million, nine hundred thirty-seven thousand, eight hundred sixty-three".