38749142138 has 16 divisors (see below), whose sum is σ = 66498016704. Its totient is φ = 16589046240.

The previous prime is 38749142119. The next prime is 38749142161. The reversal of 38749142138 is 83124194783.

It is a super-2 number, since 2×38749142138² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463828 + ... + 1490063.

It is an arithmetic number, because the mean of its divisors is an integer number (4156126044).

Almost surely, 2^38749142138 is an apocalyptic number.

38749142138 is a deficient number, since it is larger than the sum of its proper divisors (27748874566).

38749142138 is a wasteful number, since it uses less digits than its factorization.

38749142138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954837.

The product of its digits is 1161216, while the sum is 50.

The spelling of 38749142138 in words is "thirty-eight billion, seven hundred forty-nine million, one hundred forty-two thousand, one hundred thirty-eight".