4891616447 has 2 divisors, whose sum is σ = 4891616448. Its totient is φ = 4891616446.

The previous prime is 4891616423. The next prime is 4891616453. The reversal of 4891616447 is 7446161984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4891616447 - 2²² = 4887422143 is a prime.

It is a super-2 number, since 2×4891616447² = 47855822929121807618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4891616395 and 4891616404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4891646447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445808223 + 2445808224.

It is an arithmetic number, because the mean of its divisors is an integer number (2445808224).

Almost surely, 2^4891616447 is an apocalyptic number.

4891616447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4891616447 is an equidigital number, since it uses as much as digits as its factorization.

4891616447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 4891616447 is about 69940.0918429480. The cubic root of 4891616447 is about 1697.5300286274.

The spelling of 4891616447 in words is "four billion, eight hundred ninety-one million, six hundred sixteen thousand, four hundred forty-seven".