1985004698485 has 8 divisors (see below), whose sum is σ = 2384721727416. Its totient is φ = 1586193032640.

The previous prime is 1985004698477. The next prime is 1985004698543. The reversal of 1985004698485 is 5848964005891.

It can be written as a sum of positive squares in 4 ways, for example, as 185484401041 + 1799520297444 = 430679^2 + 1341462^2 .

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

It is not a de Polignac number, because 1985004698485 - 2³ = 1985004698477 is a prime.

It is a super-2 number, since 2×1985004698485² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1985004698485.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226335946 + ... + 226344715.

It is an arithmetic number, because the mean of its divisors is an integer number (298090215927).

Almost surely, 2^{1985004698485} is an apocalyptic number.

It is an amenable number.

1985004698485 is a deficient number, since it is larger than the sum of its proper divisors (399717028931).

1985004698485 is an equidigital number, since it uses as much as digits as its factorization.

1985004698485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452681543.

The product of its (nonzero) digits is 99532800, while the sum is 67.

The spelling of 1985004698485 in words is "one trillion, nine hundred eighty-five billion, four million, six hundred ninety-eight thousand, four hundred eighty-five".