20163137 has 2 divisors, whose sum is σ = 20163138. Its totient is φ = 20163136.

The previous prime is 20163133. The next prime is 20163151. The reversal of 20163137 is 73136102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19571776 + 591361 = 4424^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 20163137 - 2² = 20163133 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20163131) 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, 10081568 + 10081569.

It is an arithmetic number, because the mean of its divisors is an integer number (10081569).

Almost surely, 2^20163137 is an apocalyptic number.

It is an amenable number.

20163137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20163137 is an equidigital number, since it uses as much as digits as its factorization.

20163137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20163137 is about 4490.3381832552. The cubic root of 20163137 is about 272.1778005971.

Adding to 20163137 its reverse (73136102), we get a palindrome (93299239).

The spelling of 20163137 in words is "twenty million, one hundred sixty-three thousand, one hundred thirty-seven".