1378093 has 4 divisors (see below), whose sum is σ = 1380988. Its totient is φ = 1375200.

The previous prime is 1378081. The next prime is 1378099. The reversal of 1378093 is 3908731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 797449 + 580644 = 893^2 + 762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1378093 - 2⁵ = 1378061 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 (1378099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546 + ... + 1747.

It is an arithmetic number, because the mean of its divisors is an integer number (345247).

2^1378093 is an apocalyptic number.

It is an amenable number.

1378093 is a deficient number, since it is larger than the sum of its proper divisors (2895).

1378093 is an equidigital number, since it uses as much as digits as its factorization.

1378093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1378093 is about 1173.9220587416. The cubic root of 1378093 is about 111.2823211228.

The spelling of 1378093 in words is "one million, three hundred seventy-eight thousand, ninety-three".