20071963 has 2 divisors, whose sum is σ = 20071964. Its totient is φ = 20071962.

The previous prime is 20071921. The next prime is 20071991. The reversal of 20071963 is 36917002.

It is an a-pointer prime, because the next prime (20071991) can be obtained adding 20071963 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20071963 is a prime.

It is not a weakly prime, because it can be changed into another prime (20071763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10035981 + 10035982.

It is an arithmetic number, because the mean of its divisors is an integer number (10035982).

Almost surely, 2^20071963 is an apocalyptic number.

20071963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20071963 is an equidigital number, since it uses as much as digits as its factorization.

20071963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20071963 is about 4480.1744385682. The cubic root of 20071963 is about 271.7669346886.

Adding to 20071963 its reverse (36917002), we get a palindrome (56988965).

The spelling of 20071963 in words is "twenty million, seventy-one thousand, nine hundred sixty-three".