1438013 has 4 divisors (see below), whose sum is σ = 1522620. Its totient is φ = 1353408.

The previous prime is 1438009. The next prime is 1438033. The reversal of 1438013 is 3108341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3108341 = 43 ⋅72287.

It can be written as a sum of positive squares in 2 ways, for example, as 1170724 + 267289 = 1082^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438013 - 2² = 1438009 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 (1438033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42278 + ... + 42311.

It is an arithmetic number, because the mean of its divisors is an integer number (380655).

2^1438013 is an apocalyptic number.

It is an amenable number.

1438013 is a deficient number, since it is larger than the sum of its proper divisors (84607).

1438013 is an equidigital number, since it uses as much as digits as its factorization.

1438013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84606.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1438013 is about 1199.1717975336. The cubic root of 1438013 is about 112.8723595966.

The spelling of 1438013 in words is "one million, four hundred thirty-eight thousand, thirteen".