1304443138 has 16 divisors (see below), whose sum is σ = 2060856000. Its totient is φ = 617531472.

The previous prime is 1304443121. The next prime is 1304443159. The reversal of 1304443138 is 8313444031.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62268 + ... + 80536.

It is an arithmetic number, because the mean of its divisors is an integer number (128803500).

Almost surely, 2^1304443138 is an apocalyptic number.

1304443138 is a deficient number, since it is larger than the sum of its proper divisors (756412862).

1304443138 is a wasteful number, since it uses less digits than its factorization.

1304443138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20169.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1304443138 is about 36117.0754353118. The cubic root of 1304443138 is about 1092.6348561682.

Adding to 1304443138 its reverse (8313444031), we get a palindrome (9617887169).

The spelling of 1304443138 in words is "one billion, three hundred four million, four hundred forty-three thousand, one hundred thirty-eight".