1438003738 has 8 divisors (see below), whose sum is σ = 2197703988. Its totient is φ = 705435744.

The previous prime is 1438003717. The next prime is 1438003753. The reversal of 1438003738 is 8373008341.

It can be written as a sum of positive squares in 2 ways, for example, as 1418049649 + 19954089 = 37657^2 + 4467^2 .

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 = 1438003697 and 1438003706.

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, 6782931 + ... + 6783142.

Almost surely, 2^1438003738 is an apocalyptic number.

1438003738 is a deficient number, since it is larger than the sum of its proper divisors (759700250).

1438003738 is a wasteful number, since it uses less digits than its factorization.

1438003738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13566128.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1438003738 is about 37921.0197383984. The cubic root of 1438003738 is about 1128.7211726545.

The spelling of 1438003738 in words is "one billion, four hundred thirty-eight million, three thousand, seven hundred thirty-eight".