1338138 has 24 divisors (see below), whose sum is σ = 3070548. Its totient is φ = 419712.

The previous prime is 1338109. The next prime is 1338167. The reversal of 1338138 is 8318331.

It is an interprime number because it is at equal distance from previous prime (1338109) and next prime (1338167).

It can be written as a sum of positive squares in 2 ways, for example, as 1292769 + 45369 = 1137^2 + 213^2 .

It is a super-2 number, since 2×1338138² = 3581226614088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1881 + ... + 2492.

2^1338138 is an apocalyptic number.

1338138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1338138 is an abundant number, since it is smaller than the sum of its proper divisors (1732410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1338138 is a wasteful number, since it uses less digits than its factorization.

1338138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398 (or 4395 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1338138 is about 1156.7791491897. The cubic root of 1338138 is about 110.1962886444.

The spelling of 1338138 in words is "one million, three hundred thirty-eight thousand, one hundred thirty-eight".