168544494 has 48 divisors (see below), whose sum is σ = 389795328. Its totient is φ = 52448256.

The previous prime is 168544487. The next prime is 168544499. The reversal of 168544494 is 494445861.

168544494 is a `hidden beast` number, since 1 + 68 + 544 + 49 + 4 = 666.

168544494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168544499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36694 + ... + 41030.

It is an arithmetic number, because the mean of its divisors is an integer number (8120736).

Almost surely, 2^168544494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168544494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194897664).

168544494 is an abundant number, since it is smaller than the sum of its proper divisors (221250834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168544494 is a wasteful number, since it uses less digits than its factorization.

168544494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489 (or 4486 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 168544494 is about 12982.4687174666. The cubic root of 168544494 is about 552.3803105392.

The spelling of 168544494 in words is "one hundred sixty-eight million, five hundred forty-four thousand, four hundred ninety-four".