4456511491 has 2 divisors, whose sum is σ = 4456511492. Its totient is φ = 4456511490.

The previous prime is 4456511489. The next prime is 4456511551. The reversal of 4456511491 is 1941156544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4456511491 - 2¹ = 4456511489 is a prime.

Together with 4456511489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4456511431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2228255745 + 2228255746.

It is an arithmetic number, because the mean of its divisors is an integer number (2228255746).

Almost surely, 2^4456511491 is an apocalyptic number.

4456511491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4456511491 is an equidigital number, since it uses as much as digits as its factorization.

4456511491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 4456511491 is about 66757.1081683441. The cubic root of 4456511491 is about 1645.6280330328.

The spelling of 4456511491 in words is "four billion, four hundred fifty-six million, five hundred eleven thousand, four hundred ninety-one".