38728476418 has 8 divisors (see below), whose sum is σ = 58118324220. Its totient is φ = 19355701680.

The previous prime is 38728476403. The next prime is 38728476443. The reversal of 38728476418 is 81467482783.

It can be written as a sum of positive squares in 2 ways, for example, as 24649942009 + 14078534409 = 157003^2 + 118653^2 .

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

It is a super-2 number, since 2×38728476418² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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, 4262593 + ... + 4271668.

Almost surely, 2^38728476418 is an apocalyptic number.

38728476418 is a deficient number, since it is larger than the sum of its proper divisors (19389847802).

38728476418 is a wasteful number, since it uses less digits than its factorization.

38728476418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536532.

The product of its digits is 14450688, while the sum is 58.

The spelling of 38728476418 in words is "thirty-eight billion, seven hundred twenty-eight million, four hundred seventy-six thousand, four hundred eighteen".