168210493 has 8 divisors (see below), whose sum is σ = 183596256. Its totient is φ = 152840400.

The previous prime is 168210491. The next prime is 168210571. The reversal of 168210493 is 394012861.

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

It is a cyclic number.

It is not a de Polignac number, because 168210493 - 2¹ = 168210491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168210491) 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, 39823 + ... + 43843.

It is an arithmetic number, because the mean of its divisors is an integer number (22949532).

Almost surely, 2^168210493 is an apocalyptic number.

It is an amenable number.

168210493 is a deficient number, since it is larger than the sum of its proper divisors (15385763).

168210493 is a wasteful number, since it uses less digits than its factorization.

168210493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 168210493 is about 12969.5987987293. The cubic root of 168210493 is about 552.0151891868.

The spelling of 168210493 in words is "one hundred sixty-eight million, two hundred ten thousand, four hundred ninety-three".