38193157018 has 8 divisors (see below), whose sum is σ = 57429809460. Its totient is φ = 19049887200.

The previous prime is 38193157003. The next prime is 38193157063. The reversal of 38193157018 is 81075139183.

It can be written as a sum of positive squares in 2 ways, for example, as 35087658489 + 3105498529 = 187317^2 + 55727^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23344633 + ... + 23346268.

Almost surely, 2^38193157018 is an apocalyptic number.

38193157018 is a deficient number, since it is larger than the sum of its proper divisors (19236652442).

38193157018 is a wasteful number, since it uses less digits than its factorization.

38193157018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46691312.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 38193157018 in words is "thirty-eight billion, one hundred ninety-three million, one hundred fifty-seven thousand, eighteen".