20100000019 has 8 divisors (see below), whose sum is σ = 21928439808. Its totient is φ = 18271754760.

The previous prime is 20099999981. The next prime is 20100000047. The reversal of 20100000019 is 91000000102.

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 20100000019 - 2⁷ = 20099999891 is a prime.

It is a super-2 number, since 2×20100000019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20099999954 and 20100000008.

It is not an unprimeable number, because it can be changed into a prime (20100000049) 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, 244014 + ... + 315820.

It is an arithmetic number, because the mean of its divisors is an integer number (2741054976).

Almost surely, 2^20100000019 is an apocalyptic number.

20100000019 is a deficient number, since it is larger than the sum of its proper divisors (1828439789).

20100000019 is a wasteful number, since it uses less digits than its factorization.

20100000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97265.

The product of its (nonzero) digits is 18, while the sum is 13.

The spelling of 20100000019 in words is "twenty billion, one hundred million, nineteen", and thus it is an aban number.