1438793808 has 40 divisors (see below), whose sum is σ = 3734525856. Its totient is φ = 477321600.

The previous prime is 1438793801. The next prime is 1438793813. The reversal of 1438793808 is 8083978341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438793801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60903 + ... + 81158.

Almost surely, 2^1438793808 is an apocalyptic number.

It is an amenable number.

1438793808 is an abundant number, since it is smaller than the sum of its proper divisors (2295732048).

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

1438793808 is a wasteful number, since it uses less digits than its factorization.

1438793808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142283 (or 142277 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1438793808 is about 37931.4356174401. The cubic root of 1438793808 is about 1128.9278493235.

The spelling of 1438793808 in words is "one billion, four hundred thirty-eight million, seven hundred ninety-three thousand, eight hundred eight".