38505551919 has 4 divisors (see below), whose sum is σ = 51340735896. Its totient is φ = 25670367944.

The previous prime is 38505551911. The next prime is 38505551947. The reversal of 38505551919 is 91915550583.

38505551919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 38505551919 - 2³ = 38505551911 is a prime.

It is a super-2 number, since 2×38505551919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38505551911) 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, 6417591984 + ... + 6417591989.

It is an arithmetic number, because the mean of its divisors is an integer number (12835183974).

Almost surely, 2^38505551919 is an apocalyptic number.

38505551919 is a deficient number, since it is larger than the sum of its proper divisors (12835183977).

38505551919 is a wasteful number, since it uses less digits than its factorization.

38505551919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835183976.

The product of its (nonzero) digits is 1215000, while the sum is 51.

The spelling of 38505551919 in words is "thirty-eight billion, five hundred five million, five hundred fifty-one thousand, nine hundred nineteen".