1978484068 has 36 divisors (see below), whose sum is σ = 3812109840. Its totient is φ = 897801520.

The previous prime is 1978484063. The next prime is 1978484099. The reversal of 1978484068 is 8604848791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1978484063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315855 + ... + 322057.

It is an arithmetic number, because the mean of its divisors is an integer number (105891940).

Almost surely, 2^1978484068 is an apocalyptic number.

It is an amenable number.

1978484068 is a deficient number, since it is larger than the sum of its proper divisors (1833625772).

1978484068 is a wasteful number, since it uses less digits than its factorization.

1978484068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888 (or 6875 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The square root of 1978484068 is about 44480.1536418210. The cubic root of 1978484068 is about 1255.3866880358.

The spelling of 1978484068 in words is "one billion, nine hundred seventy-eight million, four hundred eighty-four thousand, sixty-eight".