20013030019 has 4 divisors (see below), whose sum is σ = 20031341296. Its totient is φ = 19994718744.

The previous prime is 20013029983. The next prime is 20013030031. The reversal of 20013030019 is 91003031002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20013030019 - 2¹⁷ = 20012898947 is a prime.

It is a super-2 number, since 2×20013030019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013029978 and 20013030005.

It is not an unprimeable number, because it can be changed into a prime (20113030019) 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 3 ways as a sum of consecutive naturals, for example, 9153999 + ... + 9156184.

It is an arithmetic number, because the mean of its divisors is an integer number (5007835324).

Almost surely, 2^20013030019 is an apocalyptic number.

20013030019 is a deficient number, since it is larger than the sum of its proper divisors (18311277).

20013030019 is a wasteful number, since it uses less digits than its factorization.

20013030019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18311276.

The product of its (nonzero) digits is 162, while the sum is 19.

The spelling of 20013030019 in words is "twenty billion, thirteen million, thirty thousand, nineteen".