2012273643 has 16 divisors (see below), whose sum is σ = 2772915200. Its totient is φ = 1296678240.

The previous prime is 2012273617. The next prime is 2012273687. The reversal of 2012273643 is 3463722102.

It is not a de Polignac number, because 2012273643 - 2⁸ = 2012273387 is a prime.

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 2012273643.

It is not an unprimeable number, because it can be changed into a prime (2012273143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67293 + ... + 92481.

It is an arithmetic number, because the mean of its divisors is an integer number (173307200).

Almost surely, 2^2012273643 is an apocalyptic number.

2012273643 is a deficient number, since it is larger than the sum of its proper divisors (760641557).

2012273643 is a wasteful number, since it uses less digits than its factorization.

2012273643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26082.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 2012273643 is about 44858.3731648842. The cubic root of 2012273643 is about 1262.4930991748.

Adding to 2012273643 its reverse (3463722102), we get a palindrome (5475995745).

The spelling of 2012273643 in words is "two billion, twelve million, two hundred seventy-three thousand, six hundred forty-three".