1802080985 has 8 divisors (see below), whose sum is σ = 2164876416. Its totient is φ = 1440078640.

The previous prime is 1802080979. The next prime is 1802081009. The reversal of 1802080985 is 5890802081.

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

It is not a de Polignac number, because 1802080985 - 2¹² = 1802076889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193259 + ... + 202368.

It is an arithmetic number, because the mean of its divisors is an integer number (270609552).

Almost surely, 2^1802080985 is an apocalyptic number.

It is an amenable number.

1802080985 is a deficient number, since it is larger than the sum of its proper divisors (362795431).

1802080985 is an equidigital number, since it uses as much as digits as its factorization.

1802080985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396543.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 1802080985 is about 42450.9244304526. The cubic root of 1802080985 is about 1216.9089952874.

The spelling of 1802080985 in words is "one billion, eight hundred two million, eighty thousand, nine hundred eighty-five".