1948820128 has 12 divisors (see below), whose sum is σ = 3836739690. Its totient is φ = 974410048.

The previous prime is 1948820117. The next prime is 1948820129. The reversal of 1948820128 is 8210288491.

It can be written as a sum of positive squares in only one way, i.e., 1689867664 + 258952464 = 41108^2 + 16092^2 .

It is not an unprimeable number, because it can be changed into a prime (1948820129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30450283 + ... + 30450346.

Almost surely, 2^1948820128 is an apocalyptic number.

It is an amenable number.

1948820128 is a deficient number, since it is larger than the sum of its proper divisors (1887919562).

1948820128 is an equidigital number, since it uses as much as digits as its factorization.

1948820128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60900639 (or 60900631 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 1948820128 is about 44145.4428905182. The cubic root of 1948820128 is about 1249.0809517525.

The spelling of 1948820128 in words is "one billion, nine hundred forty-eight million, eight hundred twenty thousand, one hundred twenty-eight".