1538328311519 has 2 divisors, whose sum is σ = 1538328311520. Its totient is φ = 1538328311518.

The previous prime is 1538328311383. The next prime is 1538328311549. The reversal of 1538328311519 is 9151138238351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1538328311519 - 2²⁴ = 1538311534303 is a prime.

It is a super-2 number, since 2×1538328311519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538328311549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769164155759 + 769164155760.

It is an arithmetic number, because the mean of its divisors is an integer number (769164155760).

Almost surely, 2^{1538328311519} is an apocalyptic number.

1538328311519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538328311519 is an equidigital number, since it uses as much as digits as its factorization.

1538328311519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 50.

The spelling of 1538328311519 in words is "one trillion, five hundred thirty-eight billion, three hundred twenty-eight million, three hundred eleven thousand, five hundred nineteen".