4519748161 has 4 divisors (see below), whose sum is σ = 4530799300. Its totient is φ = 4508697024.

The previous prime is 4519748141. The next prime is 4519748171. The reversal of 4519748161 is 1618479154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4297589136 + 222159025 = 65556^2 + 14905^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519748161 - 2¹⁹ = 4519223873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4519748131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524956 + ... + 5525773.

It is an arithmetic number, because the mean of its divisors is an integer number (1132699825).

Almost surely, 2^4519748161 is an apocalyptic number.

It is an amenable number.

4519748161 is a deficient number, since it is larger than the sum of its proper divisors (11051139).

4519748161 is a wasteful number, since it uses less digits than its factorization.

4519748161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051138.

The product of its digits is 241920, while the sum is 46.

The square root of 4519748161 is about 67229.0722901930. The cubic root of 4519748161 is about 1653.3751739388.

The spelling of 4519748161 in words is "four billion, five hundred nineteen million, seven hundred forty-eight thousand, one hundred sixty-one".