38000821917 has 16 divisors (see below), whose sum is σ = 52115987072. Its totient is φ = 24611843520.

The previous prime is 38000821913. The next prime is 38000821933. The reversal of 38000821917 is 71912800083.

It is not a de Polignac number, because 38000821917 - 2² = 38000821913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38000821913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185593 + ... + 332334.

It is an arithmetic number, because the mean of its divisors is an integer number (3257249192).

Almost surely, 2^38000821917 is an apocalyptic number.

38000821917 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

38000821917 is a deficient number, since it is larger than the sum of its proper divisors (14115165155).

38000821917 is a wasteful number, since it uses less digits than its factorization.

38000821917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518628.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 38000821917 in words is "thirty-eight billion, eight hundred twenty-one thousand, nine hundred seventeen".