1976978696 has 48 divisors (see below), whose sum is σ = 4704045840. Its totient is φ = 770249760.

The previous prime is 1976978687. The next prime is 1976978711. The reversal of 1976978696 is 6968796791.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224930 + ... + 233553.

It is an arithmetic number, because the mean of its divisors is an integer number (98000955).

Almost surely, 2^1976978696 is an apocalyptic number.

It is an amenable number.

1976978696 is an abundant number, since it is smaller than the sum of its proper divisors (2727067144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1976978696 is a wasteful number, since it uses less digits than its factorization.

1976978696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458514 (or 458503 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 68.

The square root of 1976978696 is about 44463.2285827289. The cubic root of 1976978696 is about 1255.0682112944.

The spelling of 1976978696 in words is "one billion, nine hundred seventy-six million, nine hundred seventy-eight thousand, six hundred ninety-six".