19226009 has 8 divisors (see below), whose sum is σ = 21097152. Its totient is φ = 17375440.

The previous prime is 19225981. The next prime is 19226017. The reversal of 19226009 is 90062291.

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 19226009 - 2¹² = 19221913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19226059) 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, 3149 + ... + 6954.

It is an arithmetic number, because the mean of its divisors is an integer number (2637144).

Almost surely, 2^19226009 is an apocalyptic number.

It is an amenable number.

19226009 is a deficient number, since it is larger than the sum of its proper divisors (1871143).

19226009 is a wasteful number, since it uses less digits than its factorization.

19226009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 19226009 is about 4384.7473131299. The cubic root of 19226009 is about 267.8940371546.

The spelling of 19226009 in words is "nineteen million, two hundred twenty-six thousand, nine".