3632666491 has 2 divisors, whose sum is σ = 3632666492. Its totient is φ = 3632666490.

The previous prime is 3632666489. The next prime is 3632666497. The reversal of 3632666491 is 1946662363.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3632666491 - 2¹ = 3632666489 is a prime.

Together with 3632666489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3632666497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1816333245 + 1816333246.

It is an arithmetic number, because the mean of its divisors is an integer number (1816333246).

Almost surely, 2^3632666491 is an apocalyptic number.

3632666491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3632666491 is an equidigital number, since it uses as much as digits as its factorization.

3632666491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 46.

The square root of 3632666491 is about 60271.6060097954. The cubic root of 3632666491 is about 1537.2405877448.

The spelling of 3632666491 in words is "three billion, six hundred thirty-two million, six hundred sixty-six thousand, four hundred ninety-one".