20019301933 has 2 divisors, whose sum is σ = 20019301934. Its totient is φ = 20019301932.

The previous prime is 20019301931. The next prime is 20019301943. The reversal of 20019301933 is 33910391002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19511340489 + 507961444 = 139683^2 + 22538^2 .

It is a cyclic number.

It is not a de Polignac number, because 20019301933 - 2¹ = 20019301931 is a prime.

Together with 20019301931, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20019301895 and 20019301904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20019301931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10009650966 + 10009650967.

It is an arithmetic number, because the mean of its divisors is an integer number (10009650967).

Almost surely, 2^20019301933 is an apocalyptic number.

It is an amenable number.

20019301933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20019301933 is an equidigital number, since it uses as much as digits as its factorization.

20019301933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 31.

Adding to 20019301933 its reverse (33910391002), we get a palindrome (53929692935).

The spelling of 20019301933 in words is "twenty billion, nineteen million, three hundred one thousand, nine hundred thirty-three".