1381478 has 16 divisors (see below), whose sum is σ = 2394144. Its totient is φ = 585600.

The previous prime is 1381459. The next prime is 1381483. The reversal of 1381478 is 8741831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926 + ... + 1902.

It is an arithmetic number, because the mean of its divisors is an integer number (149634).

2^1381478 is an apocalyptic number.

1381478 is a deficient number, since it is larger than the sum of its proper divisors (1012666).

1381478 is a wasteful number, since it uses less digits than its factorization.

1381478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its digits is 5376, while the sum is 32.

The square root of 1381478 is about 1175.3629226754. The cubic root of 1381478 is about 111.3733606139.

The spelling of 1381478 in words is "one million, three hundred eighty-one thousand, four hundred seventy-eight".