168100039 has 2 divisors, whose sum is σ = 168100040. Its totient is φ = 168100038.

The previous prime is 168100033. The next prime is 168100069. The reversal of 168100039 is 930001861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168100039 - 2⁵ = 168100007 is a prime.

It is a super-2 number, since 2×168100039² = 56515246223603042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168100033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84050019 + 84050020.

It is an arithmetic number, because the mean of its divisors is an integer number (84050020).

Almost surely, 2^168100039 is an apocalyptic number.

168100039 is a deficient number, since it is larger than the sum of its proper divisors (1).

168100039 is an equidigital number, since it uses as much as digits as its factorization.

168100039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 168100039 is about 12965.3399107004. The cubic root of 168100039 is about 551.8943373598.

The spelling of 168100039 in words is "one hundred sixty-eight million, one hundred thousand, thirty-nine".