1378045 has 12 divisors (see below), whose sum is σ = 1731996. Its totient is φ = 1052480.

The previous prime is 1378033. The next prime is 1378057. The reversal of 1378045 is 5408731.

It is an interprime number because it is at equal distance from previous prime (1378033) and next prime (1378057).

It can be written as a sum of positive squares in 2 ways, for example, as 444889 + 933156 = 667^2 + 966^2 .

It is not a de Polignac number, because 1378045 - 2⁹ = 1377533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2385 + ... + 2905.

It is an arithmetic number, because the mean of its divisors is an integer number (144333).

2^1378045 is an apocalyptic number.

It is an amenable number.

1378045 is a deficient number, since it is larger than the sum of its proper divisors (353951).

1378045 is an equidigital number, since it uses as much as digits as its factorization.

1378045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1378045 is about 1173.9016142761. The cubic root of 1378045 is about 111.2810290925.

The spelling of 1378045 in words is "one million, three hundred seventy-eight thousand, forty-five".