1038378739 has 4 divisors (see below), whose sum is σ = 1038445056. Its totient is φ = 1038312424.

The previous prime is 1038378667. The next prime is 1038378773. The reversal of 1038378739 is 9378738301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1038378739 - 2²³ = 1029990131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1038378692 and 1038378701.

It is not an unprimeable number, because it can be changed into a prime (1038378239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857 + ... + 45829.

It is an arithmetic number, because the mean of its divisors is an integer number (259611264).

Almost surely, 2^1038378739 is an apocalyptic number.

1038378739 is a deficient number, since it is larger than the sum of its proper divisors (66317).

1038378739 is an equidigital number, since it uses as much as digits as its factorization.

1038378739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66316.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1038378739 is about 32223.8846044359. The cubic root of 1038378739 is about 1012.6326569874.

The spelling of 1038378739 in words is "one billion, thirty-eight million, three hundred seventy-eight thousand, seven hundred thirty-nine".