38391619313 has 2 divisors, whose sum is σ = 38391619314. Its totient is φ = 38391619312.

The previous prime is 38391619309. The next prime is 38391619327. The reversal of 38391619313 is 31391619383.

It is a happy number.

38391619313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22670722624 + 15720896689 = 150568^2 + 125383^2 .

It is an emirp because it is prime and its reverse (31391619383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38391619313 - 2² = 38391619309 is a prime.

It is not a weakly prime, because it can be changed into another prime (38391019313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19195809656 + 19195809657.

It is an arithmetic number, because the mean of its divisors is an integer number (19195809657).

Almost surely, 2^38391619313 is an apocalyptic number.

It is an amenable number.

38391619313 is a deficient number, since it is larger than the sum of its proper divisors (1).

38391619313 is an equidigital number, since it uses as much as digits as its factorization.

38391619313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 47.

The spelling of 38391619313 in words is "thirty-eight billion, three hundred ninety-one million, six hundred nineteen thousand, three hundred thirteen".