38390739460 has 12 divisors (see below), whose sum is σ = 80620552908. Its totient is φ = 15356295776.

The previous prime is 38390739391. The next prime is 38390739463. The reversal of 38390739460 is 6493709383.

It can be written as a sum of positive squares in 2 ways, for example, as 10386055744 + 28004683716 = 101912^2 + 167346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38390739398 and 38390739407.

It is not an unprimeable number, because it can be changed into a prime (38390739463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959768467 + ... + 959768506.

It is an arithmetic number, because the mean of its divisors is an integer number (6718379409).

Almost surely, 2^38390739460 is an apocalyptic number.

It is an amenable number.

38390739460 is an abundant number, since it is smaller than the sum of its proper divisors (42229813448).

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

38390739460 is a wasteful number, since it uses less digits than its factorization.

38390739460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919536982 (or 1919536980 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 38390739460 in words is "thirty-eight billion, three hundred ninety million, seven hundred thirty-nine thousand, four hundred sixty".