1073421609 has 16 divisors (see below), whose sum is σ = 1542479232. Its totient is φ = 660071808.

The previous prime is 1073421581. The next prime is 1073421641. The reversal of 1073421609 is 9061243701.

It is not a de Polignac number, because 1073421609 - 2²⁰ = 1072373033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1073421609.

It is not an unprimeable number, because it can be changed into a prime (1073421649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46284 + ... + 65490.

It is an arithmetic number, because the mean of its divisors is an integer number (96404952).

Almost surely, 2^1073421609 is an apocalyptic number.

It is an amenable number.

1073421609 is a deficient number, since it is larger than the sum of its proper divisors (469057623).

1073421609 is a wasteful number, since it uses less digits than its factorization.

1073421609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1073421609 is about 32763.1135425191. The cubic root of 1073421609 is about 1023.8981962722.

The spelling of 1073421609 in words is "one billion, seventy-three million, four hundred twenty-one thousand, six hundred nine".