19130904 has 96 divisors (see below), whose sum is σ = 57941520. Its totient is φ = 5878656.

The previous prime is 19130869. The next prime is 19130939. The reversal of 19130904 is 40903191.

It is an interprime number because it is at equal distance from previous prime (19130869) and next prime (19130939).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24894 + ... + 25650.

Almost surely, 2^19130904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19130904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28970760).

19130904 is an abundant number, since it is smaller than the sum of its proper divisors (38810616).

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

19130904 is a wasteful number, since it uses less digits than its factorization.

19130904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19130904 is about 4373.8888874776. Note that the first 5 decimals coincide. The cubic root of 19130904 is about 267.4515776911.

Adding to 19130904 its product of nonzero digits (972), we get a square (19131876 = 4374²).

The spelling of 19130904 in words is "nineteen million, one hundred thirty thousand, nine hundred four".