1009419804 has 18 divisors (see below), whose sum is σ = 2551589040. Its totient is φ = 336473256.

The previous prime is 1009419781. The next prime is 1009419809. The reversal of 1009419804 is 4089149001.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 28039439 = 1009419804 / (1 + 0 + 0 + 9 + 4 + 1 + 9 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009419809) 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 5 ways as a sum of consecutive naturals, for example, 14019684 + ... + 14019755.

Almost surely, 2^1009419804 is an apocalyptic number.

It is an amenable number.

1009419804 is an abundant number, since it is smaller than the sum of its proper divisors (1542169236).

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

1009419804 is a wasteful number, since it uses less digits than its factorization.

1009419804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28039449 (or 28039444 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1009419804 is about 31771.3676759437. The cubic root of 1009419804 is about 1003.1301267505.

The spelling of 1009419804 in words is "one billion, nine million, four hundred nineteen thousand, eight hundred four".