1338843204 has 18 divisors (see below), whose sum is σ = 3384298190. Its totient is φ = 446281056.

The previous prime is 1338843199. The next prime is 1338843241. The reversal of 1338843204 is 4023488331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1322049600 + 16793604 = 36360^2 + 4098^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1338843204² = 3585002249793971232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 37190089 = 1338843204 / (1 + 3 + 3 + 8 + 8 + 4 + 3 + 2 + 0 + 4).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 18595009 + ... + 18595080.

Almost surely, 2^1338843204 is an apocalyptic number.

It is an amenable number.

1338843204 is an abundant number, since it is smaller than the sum of its proper divisors (2045454986).

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

1338843204 is a wasteful number, since it uses less digits than its factorization.

1338843204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37190099 (or 37190094 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1338843204 is about 36590.2063946078. The cubic root of 1338843204 is about 1102.1564320427.

The spelling of 1338843204 in words is "one billion, three hundred thirty-eight million, eight hundred forty-three thousand, two hundred four".