1223509585 has 8 divisors (see below), whose sum is σ = 1469192256. Its totient is φ = 978153840.

The previous prime is 1223509561. The next prime is 1223509591. The reversal of 1223509585 is 5859053221.

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

It is not a de Polignac number, because 1223509585 - 2²¹ = 1221412433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73419 + ... + 88528.

It is an arithmetic number, because the mean of its divisors is an integer number (183649032).

Almost surely, 2^1223509585 is an apocalyptic number.

It is an amenable number.

1223509585 is a deficient number, since it is larger than the sum of its proper divisors (245682671).

1223509585 is a wasteful number, since it uses less digits than its factorization.

1223509585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163463.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1223509585 is about 34978.7018769994. The cubic root of 1223509585 is about 1069.5533655780.

The spelling of 1223509585 in words is "one billion, two hundred twenty-three million, five hundred nine thousand, five hundred eighty-five".