19119906 has 48 divisors (see below), whose sum is σ = 45110520. Its totient is φ = 5817600.

The previous prime is 19119887. The next prime is 19119911. The reversal of 19119906 is 60991191.

It can be written as a sum of positive squares in 4 ways, for example, as 19000881 + 119025 = 4359^2 + 345^2 .

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 23230 + ... + 24038.

Almost surely, 2^19119906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19119906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22555260).

19119906 is an abundant number, since it is smaller than the sum of its proper divisors (25990614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19119906 is a wasteful number, since it uses less digits than its factorization.

19119906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The square root of 19119906 is about 4372.6314731521. The cubic root of 19119906 is about 267.4003168918.

The spelling of 19119906 in words is "nineteen million, one hundred nineteen thousand, nine hundred six".