2210661841 has 4 divisors (see below), whose sum is σ = 2232549684. Its totient is φ = 2188774000.

The previous prime is 2210661797. The next prime is 2210661877. The reversal of 2210661841 is 1481660122.

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 1347183616 + 863478225 = 36704^2 + 29385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210661841 - 2²⁷ = 2076444113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2210661881) 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, 10943770 + ... + 10943971.

It is an arithmetic number, because the mean of its divisors is an integer number (558137421).

Almost surely, 2^2210661841 is an apocalyptic number.

It is an amenable number.

2210661841 is a deficient number, since it is larger than the sum of its proper divisors (21887843).

2210661841 is a wasteful number, since it uses less digits than its factorization.

2210661841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21887842.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2210661841 is about 47017.6758357961. The cubic root of 2210661841 is about 1302.6890769485.

The spelling of 2210661841 in words is "two billion, two hundred ten million, six hundred sixty-one thousand, eight hundred forty-one".