1378003 has 8 divisors (see below), whose sum is σ = 1591920. Its totient is φ = 1178880.

The previous prime is 1378001. The next prime is 1378007. The reversal of 1378003 is 3008731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1378003 - 2¹ = 1378001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1378001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3498 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (198990).

2^1378003 is an apocalyptic number.

1378003 is a deficient number, since it is larger than the sum of its proper divisors (213917).

1378003 is a wasteful number, since it uses less digits than its factorization.

1378003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7397.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1378003 is about 1173.8837250767. The cubic root of 1378003 is about 111.2798985415.

The spelling of 1378003 in words is "one million, three hundred seventy-eight thousand, three".