168648437 has 2 divisors, whose sum is σ = 168648438. Its totient is φ = 168648436.

The previous prime is 168648367. The next prime is 168648499. The reversal of 168648437 is 734846861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168324676 + 323761 = 12974^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 168648437 - 2¹⁶ = 168582901 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 168648391 and 168648400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168642437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84324218 + 84324219.

It is an arithmetic number, because the mean of its divisors is an integer number (84324219).

Almost surely, 2^168648437 is an apocalyptic number.

It is an amenable number.

168648437 is a deficient number, since it is larger than the sum of its proper divisors (1).

168648437 is an equidigital number, since it uses as much as digits as its factorization.

168648437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 168648437 is about 12986.4713067099. The cubic root of 168648437 is about 552.4938399428.

The spelling of 168648437 in words is "one hundred sixty-eight million, six hundred forty-eight thousand, four hundred thirty-seven".