20463137 has 2 divisors, whose sum is σ = 20463138. Its totient is φ = 20463136.

The previous prime is 20463119. The next prime is 20463139. The reversal of 20463137 is 73136402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15062161 + 5400976 = 3881^2 + 2324^2 .

It is a cyclic number.

It is not a de Polignac number, because 20463137 - 2¹⁸ = 20200993 is a prime.

Together with 20463139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20463139) 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, 10231568 + 10231569.

It is an arithmetic number, because the mean of its divisors is an integer number (10231569).

Almost surely, 2^20463137 is an apocalyptic number.

It is an amenable number.

20463137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20463137 is an equidigital number, since it uses as much as digits as its factorization.

20463137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20463137 is about 4523.6199000358. The cubic root of 20463137 is about 273.5210388583.

Adding to 20463137 its reverse (73136402), we get a palindrome (93599539).

The spelling of 20463137 in words is "twenty million, four hundred sixty-three thousand, one hundred thirty-seven".