168544493 has 8 divisors (see below), whose sum is σ = 182037408. Its totient is φ = 155127024.

The previous prime is 168544487. The next prime is 168544499. The reversal of 168544493 is 394445861.

168544493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (168544487) and next prime (168544499).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168544493 - 2⁶ = 168544429 is a prime.

It is a super-2 number, since 2×168544493² = 56814492241254098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 14171 + ... + 23192.

It is an arithmetic number, because the mean of its divisors is an integer number (22754676).

Almost surely, 2^168544493 is an apocalyptic number.

168544493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168544493 is a deficient number, since it is larger than the sum of its proper divisors (13492915).

168544493 is a wasteful number, since it uses less digits than its factorization.

168544493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37723.

The product of its digits is 414720, while the sum is 44.

The square root of 168544493 is about 12982.4686789532. The cubic root of 168544493 is about 552.3803094467.

The spelling of 168544493 in words is "one hundred sixty-eight million, five hundred forty-four thousand, four hundred ninety-three".