38009419817 has 4 divisors (see below), whose sum is σ = 38229127620. Its totient is φ = 37789712016.

The previous prime is 38009419813. The next prime is 38009419831. The reversal of 38009419817 is 71891490083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23811267481 + 14198152336 = 154309^2 + 119156^2 .

It is a cyclic number.

It is not a de Polignac number, because 38009419817 - 2² = 38009419813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38009419813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109853642 + ... + 109853987.

It is an arithmetic number, because the mean of its divisors is an integer number (9557281905).

Almost surely, 2^38009419817 is an apocalyptic number.

It is an amenable number.

38009419817 is a deficient number, since it is larger than the sum of its proper divisors (219707803).

38009419817 is a wasteful number, since it uses less digits than its factorization.

38009419817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219707802.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 38009419817 in words is "thirty-eight billion, nine million, four hundred nineteen thousand, eight hundred seventeen".