168748457 has 2 divisors, whose sum is σ = 168748458. Its totient is φ = 168748456.

The previous prime is 168748451. The next prime is 168748499. The reversal of 168748457 is 754847861.

It is a happy number.

168748457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138980521 + 29767936 = 11789^2 + 5456^2 .

It is a cyclic number.

It is not a de Polignac number, because 168748457 - 2¹⁸ = 168486313 is a prime.

It is not a weakly prime, because it can be changed into another prime (168748451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84374228 + 84374229.

It is an arithmetic number, because the mean of its divisors is an integer number (84374229).

Almost surely, 2^168748457 is an apocalyptic number.

It is an amenable number.

168748457 is a deficient number, since it is larger than the sum of its proper divisors (1).

168748457 is an equidigital number, since it uses as much as digits as its factorization.

168748457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 50.

The square root of 168748457 is about 12990.3216665331. The cubic root of 168748457 is about 552.6030405063.

The spelling of 168748457 in words is "one hundred sixty-eight million, seven hundred forty-eight thousand, four hundred fifty-seven".