2012163761 has 4 divisors (see below), whose sum is σ = 2015110512. Its totient is φ = 2009217012.

The previous prime is 2012163757. The next prime is 2012163781. The reversal of 2012163761 is 1673612102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1673612102 = 2 ⋅836806051.

It is a cyclic number.

It is not a de Polignac number, because 2012163761 - 2² = 2012163757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012163721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472351 + ... + 1473716.

It is an arithmetic number, because the mean of its divisors is an integer number (503777628).

Almost surely, 2^2012163761 is an apocalyptic number.

It is an amenable number.

2012163761 is a deficient number, since it is larger than the sum of its proper divisors (2946751).

2012163761 is an equidigital number, since it uses as much as digits as its factorization.

2012163761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946750.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2012163761 is about 44857.1483823927. The cubic root of 2012163761 is about 1262.4701189020.

Adding to 2012163761 its reverse (1673612102), we get a palindrome (3685775863).

The spelling of 2012163761 in words is "two billion, twelve million, one hundred sixty-three thousand, seven hundred sixty-one".