1938136913593 has 8 divisors (see below), whose sum is σ = 1956304130688. Its totient is φ = 1919970692784.

The previous prime is 1938136913561. The next prime is 1938136913611. The reversal of 1938136913593 is 3953196318391.

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

It is a cyclic number.

It is not a de Polignac number, because 1938136913593 - 2⁵ = 1938136913561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938136913893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3997555 + ... + 4456087.

It is an arithmetic number, because the mean of its divisors is an integer number (244538016336).

Almost surely, 2^{1938136913593} is an apocalyptic number.

It is an amenable number.

1938136913593 is a deficient number, since it is larger than the sum of its proper divisors (18167217095).

1938136913593 is a wasteful number, since it uses less digits than its factorization.

1938136913593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498143.

The product of its digits is 14171760, while the sum is 61.

The spelling of 1938136913593 in words is "one trillion, nine hundred thirty-eight billion, one hundred thirty-six million, nine hundred thirteen thousand, five hundred ninety-three".