4454506891 has 2 divisors, whose sum is σ = 4454506892. Its totient is φ = 4454506890.

The previous prime is 4454506879. The next prime is 4454506937. The reversal of 4454506891 is 1986054544.

It is a happy number.

It is an a-pointer prime, because the next prime (4454506937) can be obtained adding 4454506891 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4454506891 - 2¹¹ = 4454504843 is a prime.

It is not a weakly prime, because it can be changed into another prime (4454506801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2227253445 + 2227253446.

It is an arithmetic number, because the mean of its divisors is an integer number (2227253446).

Almost surely, 2^4454506891 is an apocalyptic number.

4454506891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4454506891 is an equidigital number, since it uses as much as digits as its factorization.

4454506891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 4454506891 is about 66742.0923480827. The cubic root of 4454506891 is about 1645.3812540066.

The spelling of 4454506891 in words is "four billion, four hundred fifty-four million, five hundred six thousand, eight hundred ninety-one".