168493845 has 24 divisors (see below), whose sum is σ = 291927456. Its totient is φ = 82949568.

The previous prime is 168493789. The next prime is 168493859. The reversal of 168493845 is 548394861.

It is not a de Polignac number, because 168493845 - 2¹¹ = 168491797 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168493794 and 168493803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30699 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (12163644).

Almost surely, 2^168493845 is an apocalyptic number.

168493845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168493845 is a deficient number, since it is larger than the sum of its proper divisors (123433611).

168493845 is a wasteful number, since it uses less digits than its factorization.

168493845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66501 (or 66488 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 168493845 is about 12980.5179018404. The cubic root of 168493845 is about 552.3249733942.

The spelling of 168493845 in words is "one hundred sixty-eight million, four hundred ninety-three thousand, eight hundred forty-five".