1438284842 has 8 divisors (see below), whose sum is σ = 2162411076. Its totient is φ = 717481152.

The previous prime is 1438284821. The next prime is 1438284851. The reversal of 1438284842 is 2484828341.

It can be written as a sum of positive squares in 2 ways, for example, as 1437850561 + 434281 = 37919^2 + 659^2 .

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 = 1438284793 and 1438284802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829553 + ... + 831284.

Almost surely, 2^1438284842 is an apocalyptic number.

1438284842 is a deficient number, since it is larger than the sum of its proper divisors (724126234).

1438284842 is a wasteful number, since it uses less digits than its factorization.

1438284842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661272.

The product of its digits is 393216, while the sum is 44.

The square root of 1438284842 is about 37924.7259976918. The cubic root of 1438284842 is about 1128.7947161267.

The spelling of 1438284842 in words is "one billion, four hundred thirty-eight million, two hundred eighty-four thousand, eight hundred forty-two".