38356747509 has 4 divisors (see below), whose sum is σ = 51142330016. Its totient is φ = 25571165004.

The previous prime is 38356747453. The next prime is 38356747519. The reversal of 38356747509 is 90574765383.

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 38356747509 - 2¹⁵ = 38356714741 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 (38356747519) 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, 6392791249 + ... + 6392791254.

It is an arithmetic number, because the mean of its divisors is an integer number (12785582504).

Almost surely, 2^38356747509 is an apocalyptic number.

It is an amenable number.

38356747509 is a deficient number, since it is larger than the sum of its proper divisors (12785582507).

38356747509 is a wasteful number, since it uses less digits than its factorization.

38356747509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785582506.

The product of its (nonzero) digits is 19051200, while the sum is 57.

The spelling of 38356747509 in words is "thirty-eight billion, three hundred fifty-six million, seven hundred forty-seven thousand, five hundred nine".