19226428418 has 6 divisors (see below), whose sum is σ = 28839936771. Its totient is φ = 9613116162.

The previous prime is 19226428367. The next prime is 19226428423. The reversal of 19226428418 is 81482462291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9613214209 + 9613214209 = 98047^2 + 98047^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98047.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 147071 + ... + 245117.

Almost surely, 2^19226428418 is an apocalyptic number.

19226428418 is a deficient number, since it is larger than the sum of its proper divisors (9613508353).

19226428418 is an frugal number, since it uses more digits than its factorization.

19226428418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196096 (or 98049 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The spelling of 19226428418 in words is "nineteen billion, two hundred twenty-six million, four hundred twenty-eight thousand, four hundred eighteen".