1063985878 has 4 divisors (see below), whose sum is σ = 1595978820. Its totient is φ = 531992938.

The previous prime is 1063985863. The next prime is 1063985887. The reversal of 1063985878 is 8785893601.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×1063985878³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265996468 + ... + 265996471.

It is an arithmetic number, because the mean of its divisors is an integer number (398994705).

Almost surely, 2^1063985878 is an apocalyptic number.

1063985878 is a deficient number, since it is larger than the sum of its proper divisors (531992942).

1063985878 is an equidigital number, since it uses as much as digits as its factorization.

1063985878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531992941.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1063985878 is about 32618.7963910381. The cubic root of 1063985878 is about 1020.8892277570.

The spelling of 1063985878 in words is "one billion, sixty-three million, nine hundred eighty-five thousand, eight hundred seventy-eight".