2011618671 has 4 divisors (see below), whose sum is σ = 2682158232. Its totient is φ = 1341079112.

The previous prime is 2011618649. The next prime is 2011618681. The reversal of 2011618671 is 1768161102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2011618671 - 2⁵ = 2011618639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011618601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335269776 + ... + 335269781.

It is an arithmetic number, because the mean of its divisors is an integer number (670539558).

Almost surely, 2^2011618671 is an apocalyptic number.

2011618671 is a deficient number, since it is larger than the sum of its proper divisors (670539561).

2011618671 is an equidigital number, since it uses as much as digits as its factorization.

2011618671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670539560.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 2011618671 is about 44851.0721276538. The cubic root of 2011618671 is about 1262.3561086343.

Adding to 2011618671 its reverse (1768161102), we get a palindrome (3779779773).

The spelling of 2011618671 in words is "two billion, eleven million, six hundred eighteen thousand, six hundred seventy-one".