1378885375 has 16 divisors (see below), whose sum is σ = 1966685760. Its totient is φ = 945520800.

The previous prime is 1378885349. The next prime is 1378885381. The reversal of 1378885375 is 5735888731.

It is not a de Polignac number, because 1378885375 - 2⁹ = 1378884863 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 787060 + ... + 788809.

It is an arithmetic number, because the mean of its divisors is an integer number (122917860).

Almost surely, 2^1378885375 is an apocalyptic number.

1378885375 is a deficient number, since it is larger than the sum of its proper divisors (587800385).

1378885375 is an equidigital number, since it uses as much as digits as its factorization.

1378885375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575891 (or 1575881 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 55.

The square root of 1378885375 is about 37133.3458632534. The cubic root of 1378885375 is about 1113.0364538136.

The spelling of 1378885375 in words is "one billion, three hundred seventy-eight million, eight hundred eighty-five thousand, three hundred seventy-five".