1993608780 has 48 divisors (see below), whose sum is σ = 5687436384. Its totient is φ = 521597440.

The previous prime is 1993608779. The next prime is 1993608797. The reversal of 1993608780 is 878063991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310281 + ... + 316640.

It is an arithmetic number, because the mean of its divisors is an integer number (118488258).

Almost surely, 2^1993608780 is an apocalyptic number.

1993608780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993608780 is an abundant number, since it is smaller than the sum of its proper divisors (3693827604).

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

1993608780 is a wasteful number, since it uses less digits than its factorization.

1993608780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626986 (or 626984 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1993608780 is about 44649.8463603180. The cubic root of 1993608780 is about 1258.5775456697.

The spelling of 1993608780 in words is "one billion, nine hundred ninety-three million, six hundred eight thousand, seven hundred eighty".