1438798443 has 16 divisors (see below), whose sum is σ = 2004151296. Its totient is φ = 917068320.

The previous prime is 1438798441. The next prime is 1438798463. The reversal of 1438798443 is 3448978341.

It is not a de Polignac number, because 1438798443 - 2¹ = 1438798441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438798441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85480 + ... + 100917.

It is an arithmetic number, because the mean of its divisors is an integer number (125259456).

Almost surely, 2^1438798443 is an apocalyptic number.

1438798443 is a deficient number, since it is larger than the sum of its proper divisors (565352853).

1438798443 is a wasteful number, since it uses less digits than its factorization.

1438798443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186514.

The product of its digits is 2322432, while the sum is 51.

The square root of 1438798443 is about 37931.4967144720. The cubic root of 1438798443 is about 1128.9290615831.

The spelling of 1438798443 in words is "one billion, four hundred thirty-eight million, seven hundred ninety-eight thousand, four hundred forty-three".