1338638 has 8 divisors (see below), whose sum is σ = 2294832. Its totient is φ = 573696.

The previous prime is 1338637. The next prime is 1338641. The reversal of 1338638 is 8368331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338637) 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, 47795 + ... + 47822.

It is an arithmetic number, because the mean of its divisors is an integer number (286854).

2^1338638 is an apocalyptic number.

1338638 is a deficient number, since it is larger than the sum of its proper divisors (956194).

1338638 is an equidigital number, since it uses as much as digits as its factorization.

1338638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95626.

The product of its digits is 10368, while the sum is 32.

The square root of 1338638 is about 1156.9952463169. The cubic root of 1338638 is about 110.2100120130.

The spelling of 1338638 in words is "one million, three hundred thirty-eight thousand, six hundred thirty-eight".