1338815 has 4 divisors (see below), whose sum is σ = 1606584. Its totient is φ = 1071048.

The previous prime is 1338811. The next prime is 1338823. The reversal of 1338815 is 5188331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5188331 = 127 ⋅40853.

It is a cyclic number.

It is not a de Polignac number, because 1338815 - 2² = 1338811 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 (1338811) 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, 133877 + ... + 133886.

It is an arithmetic number, because the mean of its divisors is an integer number (401646).

2^1338815 is an apocalyptic number.

1338815 is a deficient number, since it is larger than the sum of its proper divisors (267769).

1338815 is an equidigital number, since it uses as much as digits as its factorization.

1338815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267768.

The product of its digits is 2880, while the sum is 29.

The square root of 1338815 is about 1157.0717350277. The cubic root of 1338815 is about 110.2148692665.

The spelling of 1338815 in words is "one million, three hundred thirty-eight thousand, eight hundred fifteen".