38388685739 has 8 divisors (see below), whose sum is σ = 41140402080. Its totient is φ = 35727189696.

The previous prime is 38388685703. The next prime is 38388685747. The reversal of 38388685739 is 93758688383.

38388685739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38388685739 is a prime.

It is a super-2 number, since 2×38388685739² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38388685789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22554194 + ... + 22555895.

It is an arithmetic number, because the mean of its divisors is an integer number (5142550260).

Almost surely, 2^38388685739 is an apocalyptic number.

38388685739 is a deficient number, since it is larger than the sum of its proper divisors (2751716341).

38388685739 is a wasteful number, since it uses less digits than its factorization.

38388685739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45110149.

The product of its digits is 209018880, while the sum is 68.

The spelling of 38388685739 in words is "thirty-eight billion, three hundred eighty-eight million, six hundred eighty-five thousand, seven hundred thirty-nine".