2012997985 has 4 divisors (see below), whose sum is σ = 2415597588. Its totient is φ = 1610398384.

The previous prime is 2012997977. The next prime is 2012997991. The reversal of 2012997985 is 5897992102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 634435344 + 1378562641 = 25188^2 + 37129^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012997985 - 2³ = 2012997977 is a prime.

It is a super-2 number, since 2×2012997985² = 8104321775228120450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201299794 + ... + 201299803.

It is an arithmetic number, because the mean of its divisors is an integer number (603899397).

Almost surely, 2^2012997985 is an apocalyptic number.

It is an amenable number.

2012997985 is a deficient number, since it is larger than the sum of its proper divisors (402599603).

2012997985 is an equidigital number, since it uses as much as digits as its factorization.

2012997985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402599602.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 2012997985 is about 44866.4460928209. The cubic root of 2012997985 is about 1262.6445641732.

The spelling of 2012997985 in words is "two billion, twelve million, nine hundred ninety-seven thousand, nine hundred eighty-five".