4432661491 has 2 divisors, whose sum is σ = 4432661492. Its totient is φ = 4432661490.

The previous prime is 4432661479. The next prime is 4432661551. The reversal of 4432661491 is 1941662344.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4432661491 - 2¹¹ = 4432659443 is a prime.

It is not a weakly prime, because it can be changed into another prime (4432631491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216330745 + 2216330746.

It is an arithmetic number, because the mean of its divisors is an integer number (2216330746).

Almost surely, 2^4432661491 is an apocalyptic number.

4432661491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4432661491 is an equidigital number, since it uses as much as digits as its factorization.

4432661491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 4432661491 is about 66578.2358657842. The cubic root of 4432661491 is about 1642.6871338749.

The spelling of 4432661491 in words is "four billion, four hundred thirty-two million, six hundred sixty-one thousand, four hundred ninety-one".