1982215585 has 8 divisors (see below), whose sum is σ = 2718467136. Its totient is φ = 1359233520.

The previous prime is 1982215583. The next prime is 1982215607. The reversal of 1982215585 is 5855122891.

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

It is not a de Polignac number, because 1982215585 - 2¹ = 1982215583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1982215583) 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, 28317331 + ... + 28317400.

It is an arithmetic number, because the mean of its divisors is an integer number (339808392).

Almost surely, 2^1982215585 is an apocalyptic number.

It is an amenable number.

1982215585 is a deficient number, since it is larger than the sum of its proper divisors (736251551).

1982215585 is an equidigital number, since it uses as much as digits as its factorization.

1982215585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56634743.

The product of its digits is 288000, while the sum is 46.

The square root of 1982215585 is about 44522.0797470199. The cubic root of 1982215585 is about 1256.1754324526.

The spelling of 1982215585 in words is "one billion, nine hundred eighty-two million, two hundred fifteen thousand, five hundred eighty-five".