1378875 has 16 divisors (see below), whose sum is σ = 2295072. Its totient is φ = 735200.

The previous prime is 1378859. The next prime is 1378903. The reversal of 1378875 is 5788731.

It is not a de Polignac number, because 1378875 - 2⁴ = 1378859 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (143442).

2^1378875 is an apocalyptic number.

1378875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378875 is a deficient number, since it is larger than the sum of its proper divisors (916197).

1378875 is an equidigital number, since it uses as much as digits as its factorization.

1378875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695 (or 3685 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 1378875 is about 1174.2550830207. The cubic root of 1378875 is about 111.3033662240.

The spelling of 1378875 in words is "one million, three hundred seventy-eight thousand, eight hundred seventy-five".