1938591025963 has 4 divisors (see below), whose sum is σ = 1938594374080. Its totient is φ = 1938587677848.

The previous prime is 1938591025867. The next prime is 1938591025979. The reversal of 1938591025963 is 3695201958391.

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-1938591025963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938591025993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557148 + ... + 2046361.

It is an arithmetic number, because the mean of its divisors is an integer number (484648593520).

Almost surely, 2^{1938591025963} is an apocalyptic number.

1938591025963 is a deficient number, since it is larger than the sum of its proper divisors (3348117).

1938591025963 is an equidigital number, since it uses as much as digits as its factorization.

1938591025963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348116.

The product of its (nonzero) digits is 15746400, while the sum is 61.

The spelling of 1938591025963 in words is "one trillion, nine hundred thirty-eight billion, five hundred ninety-one million, twenty-five thousand, nine hundred sixty-three".