19980000019 has 8 divisors (see below), whose sum is σ = 23827080960. Its totient is φ = 16381117896.

The previous prime is 19980000011. The next prime is 19980000067. The reversal of 19980000019 is 91000008991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19980000019 - 2³ = 19980000011 is a prime.

It is a super-2 number, since 2×19980000019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19980000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62049529 + ... + 62049850.

It is an arithmetic number, because the mean of its divisors is an integer number (2978385120).

Almost surely, 2^19980000019 is an apocalyptic number.

19980000019 is a deficient number, since it is larger than the sum of its proper divisors (3847080941).

19980000019 is a wasteful number, since it uses less digits than its factorization.

19980000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124099409.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 19980000019 in words is "nineteen billion, nine hundred eighty million, nineteen", and thus it is an aban number.