4519197641689 has 4 divisors (see below), whose sum is σ = 4538593339956. Its totient is φ = 4499801943424.

The previous prime is 4519197641663. The next prime is 4519197641713. The reversal of 4519197641689 is 9861467919154.

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 3011901243289 + 1507296398400 = 1735483^2 + 1227720^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519197641689 - 2²¹ = 4519195544537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4519197647689) 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, 9697848784 + ... + 9697849249.

It is an arithmetic number, because the mean of its divisors is an integer number (1134648334989).

Almost surely, 2^{4519197641689} is an apocalyptic number.

It is an amenable number.

4519197641689 is a deficient number, since it is larger than the sum of its proper divisors (19395698267).

4519197641689 is a wasteful number, since it uses less digits than its factorization.

4519197641689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19395698266.

The product of its digits is 117573120, while the sum is 70.

The spelling of 4519197641689 in words is "four trillion, five hundred nineteen billion, one hundred ninety-seven million, six hundred forty-one thousand, six hundred eighty-nine".