168020903 has 2 divisors, whose sum is σ = 168020904. Its totient is φ = 168020902.

The previous prime is 168020821. The next prime is 168020977. The reversal of 168020903 is 309020861.

168020903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168020903 - 2⁸ = 168020647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168020803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84010451 + 84010452.

It is an arithmetic number, because the mean of its divisors is an integer number (84010452).

Almost surely, 2^168020903 is an apocalyptic number.

168020903 is a deficient number, since it is larger than the sum of its proper divisors (1).

168020903 is an equidigital number, since it uses as much as digits as its factorization.

168020903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 168020903 is about 12962.2877224663. The cubic root of 168020903 is about 551.8077191653.

The spelling of 168020903 in words is "one hundred sixty-eight million, twenty thousand, nine hundred three".