163426019 has 2 divisors, whose sum is σ = 163426020. Its totient is φ = 163426018.

The previous prime is 163426001. The next prime is 163426057. The reversal of 163426019 is 910624361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163426019 - 2²⁰ = 162377443 is a prime.

It is a super-2 number, since 2×163426019² = 53416127372376722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163426099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81713009 + 81713010.

It is an arithmetic number, because the mean of its divisors is an integer number (81713010).

Almost surely, 2^163426019 is an apocalyptic number.

163426019 is a deficient number, since it is larger than the sum of its proper divisors (1).

163426019 is an equidigital number, since it uses as much as digits as its factorization.

163426019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 163426019 is about 12783.8186392017. The cubic root of 163426019 is about 546.7310434216.

The spelling of 163426019 in words is "one hundred sixty-three million, four hundred twenty-six thousand, nineteen".