38881693838 has 16 divisors (see below), whose sum is σ = 63184998240. Its totient is φ = 17837937696.

The previous prime is 38881693817. The next prime is 38881693847. The reversal of 38881693838 is 83839618883.

It is a super-2 number, since 2×38881693838² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4473053 + ... + 4481736.

It is an arithmetic number, because the mean of its divisors is an integer number (3949062390).

Almost surely, 2^38881693838 is an apocalyptic number.

38881693838 is a deficient number, since it is larger than the sum of its proper divisors (24303304402).

38881693838 is a wasteful number, since it uses less digits than its factorization.

38881693838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8954971.

The product of its digits is 47775744, while the sum is 65.

The spelling of 38881693838 in words is "thirty-eight billion, eight hundred eighty-one million, six hundred ninety-three thousand, eight hundred thirty-eight".