3666435841 has 4 divisors (see below), whose sum is σ = 3721158832. Its totient is φ = 3611712852.

The previous prime is 3666435823. The next prime is 3666435847. The reversal of 3666435841 is 1485346663.

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.

It is a cyclic number.

It is not a de Polignac number, because 3666435841 - 2¹³ = 3666427649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3666435791 and 3666435800.

It is not an unprimeable number, because it can be changed into a prime (3666435847) 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, 27361395 + ... + 27361528.

It is an arithmetic number, because the mean of its divisors is an integer number (930289708).

Almost surely, 2^3666435841 is an apocalyptic number.

It is an amenable number.

3666435841 is a deficient number, since it is larger than the sum of its proper divisors (54722991).

3666435841 is an equidigital number, since it uses as much as digits as its factorization.

3666435841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54722990.

The product of its digits is 1244160, while the sum is 46.

The square root of 3666435841 is about 60551.1010717394. The cubic root of 3666435841 is about 1541.9893110322.

The spelling of 3666435841 in words is "three billion, six hundred sixty-six million, four hundred thirty-five thousand, eight hundred forty-one".