2641491811 has 8 divisors (see below), whose sum is σ = 3019196160. Its totient is φ = 2263874568.

The previous prime is 2641491793. The next prime is 2641491821. The reversal of 2641491811 is 1181941462.

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

It is a cyclic number.

It is not a de Polignac number, because 2641491811 - 2⁹ = 2641491299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2641491821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67770 + ... + 99376.

It is an arithmetic number, because the mean of its divisors is an integer number (377399520).

Almost surely, 2^2641491811 is an apocalyptic number.

2641491811 is a deficient number, since it is larger than the sum of its proper divisors (377704349).

2641491811 is a wasteful number, since it uses less digits than its factorization.

2641491811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43553.

The product of its digits is 13824, while the sum is 37.

The square root of 2641491811 is about 51395.4454305048. The cubic root of 2641491811 is about 1382.3449264110.

The spelling of 2641491811 in words is "two billion, six hundred forty-one million, four hundred ninety-one thousand, eight hundred eleven".