38638919630 has 16 divisors (see below), whose sum is σ = 69606302400. Its totient is φ = 15443068512.

The previous prime is 38638919617. The next prime is 38638919663. The reversal of 38638919630 is 3691983683.

It is a super-2 number, since 2×38638919630² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1549430 + ... + 1574169.

It is an arithmetic number, because the mean of its divisors is an integer number (4350393900).

Almost surely, 2^38638919630 is an apocalyptic number.

38638919630 is a deficient number, since it is larger than the sum of its proper divisors (30967382770).

38638919630 is a wasteful number, since it uses less digits than its factorization.

38638919630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124843.

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 38638919630 in words is "thirty-eight billion, six hundred thirty-eight million, nine hundred nineteen thousand, six hundred thirty".