38738140509 has 4 divisors (see below), whose sum is σ = 51650854016. Its totient is φ = 25825427004.

The previous prime is 38738140501. The next prime is 38738140531. The reversal of 38738140509 is 90504183783.

38738140509 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38738140509 - 2³ = 38738140501 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 (38738140501) 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, 6456356749 + ... + 6456356754.

It is an arithmetic number, because the mean of its divisors is an integer number (12912713504).

Almost surely, 2^38738140509 is an apocalyptic number.

It is an amenable number.

38738140509 is a deficient number, since it is larger than the sum of its proper divisors (12912713507).

38738140509 is a wasteful number, since it uses less digits than its factorization.

38738140509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12912713506.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 38738140509 in words is "thirty-eight billion, seven hundred thirty-eight million, one hundred forty thousand, five hundred nine".