1338443742 has 8 divisors (see below), whose sum is σ = 2676887496. Its totient is φ = 446147912.

The previous prime is 1338443741. The next prime is 1338443747. The reversal of 1338443742 is 2473448331.

It is a happy number.

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

1338443742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1338443742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338443741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111536973 + ... + 111536984.

It is an arithmetic number, because the mean of its divisors is an integer number (334610937).

Almost surely, 2^1338443742 is an apocalyptic number.

1338443742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1338443742 is a wasteful number, since it uses less digits than its factorization.

1338443742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223073962.

The product of its digits is 193536, while the sum is 39.

The square root of 1338443742 is about 36584.7473956019. The cubic root of 1338443742 is about 1102.0468067071.

The spelling of 1338443742 in words is "one billion, three hundred thirty-eight million, four hundred forty-three thousand, seven hundred forty-two".