163243019 has 4 divisors (see below), whose sum is σ = 163515240. Its totient is φ = 162970800.

The previous prime is 163243013. The next prime is 163243043. The reversal of 163243019 is 910342361.

163243019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163243019 is a prime.

It is a super-2 number, since 2×163243019² = 53296566504468722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163242982 and 163243000.

It is not an unprimeable number, because it can be changed into a prime (163243013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135209 + ... + 136410.

It is an arithmetic number, because the mean of its divisors is an integer number (40878810).

Almost surely, 2^163243019 is an apocalyptic number.

163243019 is a deficient number, since it is larger than the sum of its proper divisors (272221).

163243019 is an equidigital number, since it uses as much as digits as its factorization.

163243019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272220.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 163243019 is about 12776.6591486194. The cubic root of 163243019 is about 546.5268956980.

The spelling of 163243019 in words is "one hundred sixty-three million, two hundred forty-three thousand, nineteen".