102168019 has 2 divisors, whose sum is σ = 102168020. Its totient is φ = 102168018.

The previous prime is 102168013. The next prime is 102168041. The reversal of 102168019 is 910861201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102168019 is a prime.

It is a super-2 number, since 2×102168019² = 20876608212768722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102168013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51084009 + 51084010.

It is an arithmetic number, because the mean of its divisors is an integer number (51084010).

Almost surely, 2^102168019 is an apocalyptic number.

102168019 is a deficient number, since it is larger than the sum of its proper divisors (1).

102168019 is an equidigital number, since it uses as much as digits as its factorization.

102168019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 102168019 is about 10107.8196956614. The cubic root of 102168019 is about 467.4892811177.

The spelling of 102168019 in words is "one hundred two million, one hundred sixty-eight thousand, nineteen".