1378871 has 12 divisors (see below), whose sum is σ = 1537200. Its totient is φ = 1235520.

The previous prime is 1378859. The next prime is 1378903. The reversal of 1378871 is 1788731.

It is not a de Polignac number, because 1378871 - 2⁶ = 1378807 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 (1378801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6830 + ... + 7028.

It is an arithmetic number, because the mean of its divisors is an integer number (128100).

2^1378871 is an apocalyptic number.

1378871 is a deficient number, since it is larger than the sum of its proper divisors (158329).

1378871 is a wasteful number, since it uses less digits than its factorization.

1378871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 253 counting only the distinct ones).

The product of its digits is 9408, while the sum is 35.

The square root of 1378871 is about 1174.2533798120. The cubic root of 1378871 is about 111.3032585966.

The spelling of 1378871 in words is "one million, three hundred seventy-eight thousand, eight hundred seventy-one".