19993842130 has 16 divisors (see below), whose sum is σ = 35997697944. Its totient is φ = 7995585280.

The previous prime is 19993842091. The next prime is 19993842191. The reversal of 19993842130 is 3124839991.

It can be written as a sum of positive squares in 4 ways, for example, as 14377688649 + 5616153481 = 119907^2 + 74941^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200551 + ... + 283210.

Almost surely, 2^19993842130 is an apocalyptic number.

19993842130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19993842130 is a deficient number, since it is larger than the sum of its proper divisors (16003855814).

19993842130 is a wasteful number, since it uses less digits than its factorization.

19993842130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487901.

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 19993842130 in words is "nineteen billion, nine hundred ninety-three million, eight hundred forty-two thousand, one hundred thirty".