168485437 has 2 divisors, whose sum is σ = 168485438. Its totient is φ = 168485436.

The previous prime is 168485423. The next prime is 168485461. The reversal of 168485437 is 734584861.

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., 131652676 + 36832761 = 11474^2 + 6069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168485437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168485467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84242718 + 84242719.

It is an arithmetic number, because the mean of its divisors is an integer number (84242719).

Almost surely, 2^168485437 is an apocalyptic number.

It is an amenable number.

168485437 is a deficient number, since it is larger than the sum of its proper divisors (1).

168485437 is an equidigital number, since it uses as much as digits as its factorization.

168485437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The square root of 168485437 is about 12980.1940278256. The cubic root of 168485437 is about 552.3157860643.

It can be divided in two parts, 168 and 485437, that added together give a triangular number (485605 = T₉₈₅).

The spelling of 168485437 in words is "one hundred sixty-eight million, four hundred eighty-five thousand, four hundred thirty-seven".