38738409247 has 4 divisors (see below), whose sum is σ = 38739332016. Its totient is φ = 38737486480.

The previous prime is 38738409197. The next prime is 38738409289. The reversal of 38738409247 is 74290483783.

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 38738409247 - 2²³ = 38730020639 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 (38738409547) 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, 395254 + ... + 483427.

It is an arithmetic number, because the mean of its divisors is an integer number (9684833004).

Almost surely, 2^38738409247 is an apocalyptic number.

38738409247 is a deficient number, since it is larger than the sum of its proper divisors (922769).

38738409247 is an equidigital number, since it uses as much as digits as its factorization.

38738409247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922768.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 38738409247 in words is "thirty-eight billion, seven hundred thirty-eight million, four hundred nine thousand, two hundred forty-seven".