1378089863 has 4 divisors (see below), whose sum is σ = 1378178208. Its totient is φ = 1378001520.

The previous prime is 1378089821. The next prime is 1378089871. The reversal of 1378089863 is 3689808731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1378089863 - 2⁶ = 1378089799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378089883) 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 in 3 ways as a sum of consecutive naturals, for example, 13823 + ... + 54288.

It is an arithmetic number, because the mean of its divisors is an integer number (344544552).

Almost surely, 2^1378089863 is an apocalyptic number.

1378089863 is a deficient number, since it is larger than the sum of its proper divisors (88345).

1378089863 is an equidigital number, since it uses as much as digits as its factorization.

1378089863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88344.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1378089863 is about 37122.6327595444. The cubic root of 1378089863 is about 1112.8223668412.

The spelling of 1378089863 in words is "one billion, three hundred seventy-eight million, eighty-nine thousand, eight hundred sixty-three".