38185641128 has 16 divisors (see below), whose sum is σ = 75809728980. Its totient is φ = 17969713408.

The previous prime is 38185641127. The next prime is 38185641139. The reversal of 38185641128 is 82114658183.

It can be written as a sum of positive squares in 2 ways, for example, as 36872448484 + 1313192644 = 192022^2 + 36238^2 .

It is a super-2 number, since 2×38185641128² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38185641127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140388251 + ... + 140388522.

Almost surely, 2^38185641128 is an apocalyptic number.

It is an amenable number.

38185641128 is a deficient number, since it is larger than the sum of its proper divisors (37624087852).

38185641128 is a wasteful number, since it uses less digits than its factorization.

38185641128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280776796 (or 280776792 counting only the distinct ones).

The product of its digits is 368640, while the sum is 47.

The spelling of 38185641128 in words is "thirty-eight billion, one hundred eighty-five million, six hundred forty-one thousand, one hundred twenty-eight".