1538236328351 has 16 divisors (see below), whose sum is σ = 1683164740608. Its totient is φ = 1399463049600.

The previous prime is 1538236328309. The next prime is 1538236328401.

1538236328351 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1538236328351 - 2¹⁸ = 1538236066207 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1538236328351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538236228351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187465 + ... + 2118146.

It is an arithmetic number, because the mean of its divisors is an integer number (105197796288).

Almost surely, 2^{1538236328351} is an apocalyptic number.

1538236328351 is a deficient number, since it is larger than the sum of its proper divisors (144928412257).

1538236328351 is a wasteful number, since it uses less digits than its factorization.

1538236328351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306542.

The product of its digits is 3110400, while the sum is 50.

The spelling of 1538236328351 in words is "one trillion, five hundred thirty-eight billion, two hundred thirty-six million, three hundred twenty-eight thousand, three hundred fifty-one".