1538046399138 has 16 divisors (see below), whose sum is σ = 3076122813120. Its totient is φ = 512677130576.

The previous prime is 1538046399121. The next prime is 1538046399181. The reversal of 1538046399138 is 8319936408351.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 554670 + ... + 1839497.

It is an arithmetic number, because the mean of its divisors is an integer number (192257675820).

Almost surely, 2^{1538046399138} is an apocalyptic number.

1538046399138 is an abundant number, since it is smaller than the sum of its proper divisors (1538076413982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1538046399138 is a wasteful number, since it uses less digits than its factorization.

1538046399138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501241.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 1538046399138 in words is "one trillion, five hundred thirty-eight billion, forty-six million, three hundred ninety-nine thousand, one hundred thirty-eight".