168940103 has 2 divisors, whose sum is σ = 168940104. Its totient is φ = 168940102.

The previous prime is 168940091. The next prime is 168940127. The reversal of 168940103 is 301049861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168940103 - 2¹⁰ = 168939079 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168940103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168940193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84470051 + 84470052.

It is an arithmetic number, because the mean of its divisors is an integer number (84470052).

Almost surely, 2^168940103 is an apocalyptic number.

168940103 is a deficient number, since it is larger than the sum of its proper divisors (1).

168940103 is an equidigital number, since it uses as much as digits as its factorization.

168940103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 168940103 is about 12997.6960650725. The cubic root of 168940103 is about 552.8121566824.

Adding to 168940103 its reverse (301049861), we get a palindrome (469989964).

The spelling of 168940103 in words is "one hundred sixty-eight million, nine hundred forty thousand, one hundred three".