1948394938492 has 24 divisors (see below), whose sum is σ = 3440220728112. Its totient is φ = 965476512000.

The previous prime is 1948394938487. The next prime is 1948394938493. The reversal of 1948394938492 is 2948394938491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948394938493) 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, 4257567 + ... + 4692937.

It is an arithmetic number, because the mean of its divisors is an integer number (143342530338).

Almost surely, 2^{1948394938492} is an apocalyptic number.

It is an amenable number.

1948394938492 is a deficient number, since it is larger than the sum of its proper divisors (1491825789620).

1948394938492 is a wasteful number, since it uses less digits than its factorization.

1948394938492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445389 (or 445387 counting only the distinct ones).

The product of its digits is 483729408, while the sum is 73.

Subtracting 1948394938492 from its reverse (2948394938491), we obtain a palindrome (999999999999).

The spelling of 1948394938492 in words is "one trillion, nine hundred forty-eight billion, three hundred ninety-four million, nine hundred thirty-eight thousand, four hundred ninety-two".