1948221948573 has 12 divisors (see below), whose sum is σ = 2814280583868. Its totient is φ = 1298730533760.

The previous prime is 1948221948571. The next prime is 1948221948593. The reversal of 1948221948573 is 3758491228491.

1948221948573 is a `hidden beast` number, since 1 + 9 + 4 + 8 + 2 + 2 + 19 + 48 + 573 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1034588019609 + 913633928964 = 1017147^2 + 955842^2 .

It is not a de Polignac number, because 1948221948573 - 2¹ = 1948221948571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1948221948573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948221948571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6861340 + ... + 7139637.

It is an arithmetic number, because the mean of its divisors is an integer number (234523381989).

Almost surely, 2^{1948221948573} is an apocalyptic number.

It is an amenable number.

1948221948573 is a deficient number, since it is larger than the sum of its proper divisors (866058635295).

1948221948573 is a wasteful number, since it uses less digits than its factorization.

1948221948573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016444 (or 14016441 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 1948221948573 in words is "one trillion, nine hundred forty-eight billion, two hundred twenty-one million, nine hundred forty-eight thousand, five hundred seventy-three".