1973989808 has 40 divisors (see below), whose sum is σ = 4379496480. Its totient is φ = 844346880.

The previous prime is 1973989793. The next prime is 1973989817. The reversal of 1973989808 is 8089893791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41438 + ... + 75266.

It is an arithmetic number, because the mean of its divisors is an integer number (109487412).

Almost surely, 2^1973989808 is an apocalyptic number.

It is an amenable number.

1973989808 is an abundant number, since it is smaller than the sum of its proper divisors (2405506672).

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

1973989808 is a wasteful number, since it uses less digits than its factorization.

1973989808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34365 (or 34359 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 62.

The square root of 1973989808 is about 44429.6050848981. The cubic root of 1973989808 is about 1254.4354021911.

The spelling of 1973989808 in words is "one billion, nine hundred seventy-three million, nine hundred eighty-nine thousand, eight hundred eight".