20033101819 has 2 divisors, whose sum is σ = 20033101820. Its totient is φ = 20033101818.

The previous prime is 20033101817. The next prime is 20033101889. The reversal of 20033101819 is 91810133002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20033101819 - 2¹ = 20033101817 is a prime.

It is a super-2 number, since 2×20033101819² (a number of 21 digits) contains 22 as substring.

Together with 20033101817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20033101811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016550909 + 10016550910.

It is an arithmetic number, because the mean of its divisors is an integer number (10016550910).

Almost surely, 2^20033101819 is an apocalyptic number.

20033101819 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033101819 is an equidigital number, since it uses as much as digits as its factorization.

20033101819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 20033101819 in words is "twenty billion, thirty-three million, one hundred one thousand, eight hundred nineteen".