1609284421 has 8 divisors (see below), whose sum is σ = 1643950080. Its totient is φ = 1574778192.

The previous prime is 1609284389. The next prime is 1609284451. The reversal of 1609284421 is 1244829061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1609284421 - 2⁵ = 1609284389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609284451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19341 + ... + 59938.

It is an arithmetic number, because the mean of its divisors is an integer number (205493760).

Almost surely, 2^1609284421 is an apocalyptic number.

It is an amenable number.

1609284421 is a deficient number, since it is larger than the sum of its proper divisors (34665659).

1609284421 is an equidigital number, since it uses as much as digits as its factorization.

1609284421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79715.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1609284421 is about 40115.8873889136. The cubic root of 1609284421 is about 1171.8650510809.

The spelling of 1609284421 in words is "one billion, six hundred nine million, two hundred eighty-four thousand, four hundred twenty-one".