38919456789 has 4 divisors (see below), whose sum is σ = 51892609056. Its totient is φ = 25946304524.

The previous prime is 38919456707. The next prime is 38919456791. The reversal of 38919456789 is 98765491983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38919456789 - 2⁷ = 38919456661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38919456799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6486576129 + ... + 6486576134.

It is an arithmetic number, because the mean of its divisors is an integer number (12973152264).

Almost surely, 2^38919456789 is an apocalyptic number.

It is an amenable number.

38919456789 is a deficient number, since it is larger than the sum of its proper divisors (12973152267).

38919456789 is a wasteful number, since it uses less digits than its factorization.

38919456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973152266.

The product of its digits is 117573120, while the sum is 69.

The spelling of 38919456789 in words is "thirty-eight billion, nine hundred nineteen million, four hundred fifty-six thousand, seven hundred eighty-nine".