1938484745563 has 4 divisors (see below), whose sum is σ = 1943884424880. Its totient is φ = 1933085066248.

The previous prime is 1938484745551. The next prime is 1938484745609. The reversal of 1938484745563 is 3655474848391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1938484745563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938484745503) 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 in 3 ways as a sum of consecutive naturals, for example, 2699839120 + ... + 2699839837.

It is an arithmetic number, because the mean of its divisors is an integer number (485971106220).

Almost surely, 2^{1938484745563} is an apocalyptic number.

1938484745563 is a deficient number, since it is larger than the sum of its proper divisors (5399679317).

1938484745563 is an equidigital number, since it uses as much as digits as its factorization.

1938484745563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399679316.

The product of its digits is 348364800, while the sum is 67.

The spelling of 1938484745563 in words is "one trillion, nine hundred thirty-eight billion, four hundred eighty-four million, seven hundred forty-five thousand, five hundred sixty-three".