1381293 has 10 divisors (see below), whose sum is σ = 2063534. Its totient is φ = 920808.

The previous prime is 1381291. The next prime is 1381297. The reversal of 1381293 is 3921831.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 272484 = 1053^2 + 522^2 .

It is not a de Polignac number, because 1381293 - 2¹ = 1381291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8446 + ... + 8607.

2^1381293 is an apocalyptic number.

It is an amenable number.

1381293 is a deficient number, since it is larger than the sum of its proper divisors (682241).

1381293 is an equidigital number, since it uses as much as digits as its factorization.

1381293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17065 (or 17056 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1381293 is about 1175.2842209440. The cubic root of 1381293 is about 111.3683888876.

It can be divided in two parts, 138 and 1293, that added together give a triangular number (1431 = T₅₃).

The spelling of 1381293 in words is "one million, three hundred eighty-one thousand, two hundred ninety-three".