1938878482 has 8 divisors (see below), whose sum is σ = 2910278016. Its totient is φ = 968785812.

The previous prime is 1938878453. The next prime is 1938878483. The reversal of 1938878482 is 2848788391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1938878483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322998 + ... + 328945.

It is an arithmetic number, because the mean of its divisors is an integer number (363784752).

Almost surely, 2^1938878482 is an apocalyptic number.

1938878482 is a deficient number, since it is larger than the sum of its proper divisors (971399534).

1938878482 is a wasteful number, since it uses less digits than its factorization.

1938878482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653432.

The product of its digits is 6193152, while the sum is 58.

The square root of 1938878482 is about 44032.6978732850. The cubic root of 1938878482 is about 1246.9533230675.

Subtracting 1938878482 from its reverse (2848788391), we obtain a palindrome (909909909).

The spelling of 1938878482 in words is "one billion, nine hundred thirty-eight million, eight hundred seventy-eight thousand, four hundred eighty-two".