168516983 has 2 divisors, whose sum is σ = 168516984. Its totient is φ = 168516982.

The previous prime is 168516979. The next prime is 168516991. The reversal of 168516983 is 389615861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168516983 - 2² = 168516979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168516913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84258491 + 84258492.

It is an arithmetic number, because the mean of its divisors is an integer number (84258492).

Almost surely, 2^168516983 is an apocalyptic number.

168516983 is a deficient number, since it is larger than the sum of its proper divisors (1).

168516983 is an equidigital number, since it uses as much as digits as its factorization.

168516983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 168516983 is about 12981.4091299828. The cubic root of 168516983 is about 552.3502544567.

The spelling of 168516983 in words is "one hundred sixty-eight million, five hundred sixteen thousand, nine hundred eighty-three".