448728747919 has 2 divisors, whose sum is σ = 448728747920. Its totient is φ = 448728747918.

The previous prime is 448728747853. The next prime is 448728747959. The reversal of 448728747919 is 919747827844.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 448728747919 - 2²¹ = 448726650767 is a prime.

It is a super-2 number, since 2×448728747919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448728747959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224364373959 + 224364373960.

It is an arithmetic number, because the mean of its divisors is an integer number (224364373960).

Almost surely, 2^448728747919 is an apocalyptic number.

448728747919 is a deficient number, since it is larger than the sum of its proper divisors (1).

448728747919 is an equidigital number, since it uses as much as digits as its factorization.

448728747919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 227598336, while the sum is 70.

The spelling of 448728747919 in words is "four hundred forty-eight billion, seven hundred twenty-eight million, seven hundred forty-seven thousand, nine hundred nineteen".