19228019 has 8 divisors (see below), whose sum is σ = 20450640. Its totient is φ = 18026496.

The previous prime is 19227991. The next prime is 19228021. The reversal of 19228019 is 91082291.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19228019 - 2⁸ = 19227763 is a prime.

It is a super-2 number, since 2×19228019² = 739433429328722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19228039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3374 + ... + 7059.

It is an arithmetic number, because the mean of its divisors is an integer number (2556330).

Almost surely, 2^19228019 is an apocalyptic number.

19228019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19228019 is a deficient number, since it is larger than the sum of its proper divisors (1222621).

19228019 is a wasteful number, since it uses less digits than its factorization.

19228019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 19228019 is about 4384.9765107695. The cubic root of 19228019 is about 267.9033725684.

The spelling of 19228019 in words is "nineteen million, two hundred twenty-eight thousand, nineteen".