38404828813 has 8 divisors (see below), whose sum is σ = 41435503256. Its totient is φ = 35385076800.

The previous prime is 38404828753. The next prime is 38404828831. The reversal of 38404828813 is 31882840483.

38404828813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2633537124 + 35771291689 = 51318^2 + 189133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38404828813 is a prime.

It is the 195972-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38404828853) by changing a digit.

It is a nontrivial repunit in base 195971.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2723298 + ... + 2737363.

It is an arithmetic number, because the mean of its divisors is an integer number (5179437907).

Almost surely, 2^38404828813 is an apocalyptic number.

It is an amenable number.

38404828813 is a deficient number, since it is larger than the sum of its proper divisors (3030674443).

38404828813 is a wasteful number, since it uses less digits than its factorization.

38404828813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461215.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 38404828813 in words is "thirty-eight billion, four hundred four million, eight hundred twenty-eight thousand, eight hundred thirteen".