168683493 has 32 divisors (see below), whose sum is σ = 254951424. Its totient is φ = 98280000.

The previous prime is 168683491. The next prime is 168683519. The reversal of 168683493 is 394386861.

It is not a de Polignac number, because 168683493 - 2¹ = 168683491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168683491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184708 + ... + 185618.

It is an arithmetic number, because the mean of its divisors is an integer number (7967232).

Almost surely, 2^168683493 is an apocalyptic number.

It is an amenable number.

168683493 is a deficient number, since it is larger than the sum of its proper divisors (86267931).

168683493 is a wasteful number, since it uses less digits than its factorization.

168683493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its digits is 746496, while the sum is 48.

The square root of 168683493 is about 12987.8209488736. The cubic root of 168683493 is about 552.5321185508.

The spelling of 168683493 in words is "one hundred sixty-eight million, six hundred eighty-three thousand, four hundred ninety-three".