20137963 has 2 divisors, whose sum is σ = 20137964. Its totient is φ = 20137962.

The previous prime is 20137961. The next prime is 20137993. The reversal of 20137963 is 36973102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20137963 - 2¹ = 20137961 is a prime.

Together with 20137961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20137961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10068981 + 10068982.

It is an arithmetic number, because the mean of its divisors is an integer number (10068982).

Almost surely, 2^20137963 is an apocalyptic number.

20137963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20137963 is an equidigital number, since it uses as much as digits as its factorization.

20137963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 20137963 is about 4487.5341781428. The cubic root of 20137963 is about 272.0644806400.

The spelling of 20137963 in words is "twenty million, one hundred thirty-seven thousand, nine hundred sixty-three".