1978824113 has 8 divisors (see below), whose sum is σ = 2359840128. Its totient is φ = 1622389824.

The previous prime is 1978824109. The next prime is 1978824119. The reversal of 1978824113 is 3114288791.

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

It is not a de Polignac number, because 1978824113 - 2² = 1978824109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1978824119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6145256 + ... + 6145577.

It is an arithmetic number, because the mean of its divisors is an integer number (294980016).

Almost surely, 2^1978824113 is an apocalyptic number.

It is an amenable number.

1978824113 is a deficient number, since it is larger than the sum of its proper divisors (381016015).

1978824113 is a wasteful number, since it uses less digits than its factorization.

1978824113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12290863.

The product of its digits is 96768, while the sum is 44.

The square root of 1978824113 is about 44483.9759126812. The cubic root of 1978824113 is about 1255.4586056416.

The spelling of 1978824113 in words is "one billion, nine hundred seventy-eight million, eight hundred twenty-four thousand, one hundred thirteen".