1338812642 has 8 divisors (see below), whose sum is σ = 2008447056. Its totient is φ = 669330292.

The previous prime is 1338812639. The next prime is 1338812653. The reversal of 1338812642 is 2462188331.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1338812596 and 1338812605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12608 + ... + 53259.

It is an arithmetic number, because the mean of its divisors is an integer number (251055882).

Almost surely, 2^1338812642 is an apocalyptic number.

1338812642 is a deficient number, since it is larger than the sum of its proper divisors (669634414).

1338812642 is a wasteful number, since it uses less digits than its factorization.

1338812642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76032.

The product of its digits is 55296, while the sum is 38.

The square root of 1338812642 is about 36589.7887668131. The cubic root of 1338812642 is about 1102.1480456085.

The spelling of 1338812642 in words is "one billion, three hundred thirty-eight million, eight hundred twelve thousand, six hundred forty-two".