100168009 has 2 divisors, whose sum is σ = 100168010. Its totient is φ = 100168008.

The previous prime is 100167997. The next prime is 100168049. The reversal of 100168009 is 900861001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92102409 + 8065600 = 9597^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 100168009 - 2¹³ = 100159817 is a prime.

It is not a weakly prime, because it can be changed into another prime (100168049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50084004 + 50084005.

It is an arithmetic number, because the mean of its divisors is an integer number (50084005).

Almost surely, 2^100168009 is an apocalyptic number.

It is an amenable number.

100168009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100168009 is an equidigital number, since it uses as much as digits as its factorization.

100168009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 100168009 is about 10008.3969245829. The cubic root of 100168009 is about 464.4186808206.

The spelling of 100168009 in words is "one hundred million, one hundred sixty-eight thousand, nine".