10000019988 has 36 divisors (see below), whose sum is σ = 28888947360. Its totient is φ = 2857148496.

The previous prime is 10000019987. The next prime is 10000019989. The reversal of 10000019988 is 88991000001.

It is an interprime number because it is at equal distance from previous prime (10000019987) and next prime (10000019989).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000019987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19841058 + ... + 19841561.

It is an arithmetic number, because the mean of its divisors is an integer number (802470760).

Almost surely, 2^10000019988 is an apocalyptic number.

10000019988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10000019988 is an abundant number, since it is smaller than the sum of its proper divisors (18888927372).

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

10000019988 is a wasteful number, since it uses less digits than its factorization.

10000019988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39682636 (or 39682631 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

Adding to 10000019988 its reverse (88991000001), we get a palindrome (98991019989).

The spelling of 10000019988 in words is "ten billion, nineteen thousand, nine hundred eighty-eight".