1153985 has 8 divisors (see below), whose sum is σ = 1582656. Its totient is φ = 791280.

The previous prime is 1153973. The next prime is 1154017. The reversal of 1153985 is 5893511.

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

It is not a de Polignac number, because 1153985 - 2⁶ = 1153921 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, 16451 + ... + 16520.

It is an arithmetic number, because the mean of its divisors is an integer number (197832).

2^1153985 is an apocalyptic number.

It is an amenable number.

1153985 is a deficient number, since it is larger than the sum of its proper divisors (428671).

1153985 is an equidigital number, since it uses as much as digits as its factorization.

1153985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32983.

The product of its digits is 5400, while the sum is 32.

The square root of 1153985 is about 1074.2369384824. The cubic root of 1153985 is about 104.8898315390.

The spelling of 1153985 in words is "one million, one hundred fifty-three thousand, nine hundred eighty-five".