1993459512 has 48 divisors (see below), whose sum is σ = 5477902920. Its totient is φ = 604077760.

The previous prime is 1993459511. The next prime is 1993459571. The reversal of 1993459512 is 2159543991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993459511) 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, 340323 + ... + 346130.

Almost surely, 2^1993459512 is an apocalyptic number.

1993459512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1993459512 is an abundant number, since it is smaller than the sum of its proper divisors (3484443408).

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

1993459512 is a wasteful number, since it uses less digits than its factorization.

1993459512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686484 (or 686469 counting only the distinct ones).

The product of its digits is 437400, while the sum is 48.

The square root of 1993459512 is about 44648.1747891221. The cubic root of 1993459512 is about 1258.5461336154.

The spelling of 1993459512 in words is "one billion, nine hundred ninety-three million, four hundred fifty-nine thousand, five hundred twelve".