1948278728492 has 12 divisors (see below), whose sum is σ = 3557726373936. Its totient is φ = 931785478800.

The previous prime is 1948278728491. The next prime is 1948278728569. The reversal of 1948278728492 is 2948278728491.

It is not an unprimeable number, because it can be changed into a prime (1948278728491) 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, 10588471259 + ... + 10588471442.

It is an arithmetic number, because the mean of its divisors is an integer number (296477197828).

Almost surely, 2^{1948278728492} is an apocalyptic number.

It is an amenable number.

1948278728492 is a deficient number, since it is larger than the sum of its proper divisors (1609447645444).

1948278728492 is a wasteful number, since it uses less digits than its factorization.

1948278728492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21176942728 (or 21176942726 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 71.

Subtracting 1948278728492 from its reverse (2948278728491), we obtain a palindrome (999999999999).

The spelling of 1948278728492 in words is "one trillion, nine hundred forty-eight billion, two hundred seventy-eight million, seven hundred twenty-eight thousand, four hundred ninety-two".