504161061849 has 9 divisors (see below), whose sum is σ = 728235721759. Its totient is φ = 336105954480.

The previous prime is 504161061839. The next prime is 504161061857. The reversal of 504161061849 is 948160161405.

The square root of 504161061849 is 710043.

It is a perfect power (a square), and thus also a powerful number.

504161061849 is a `hidden beast` number, since 5 + 0 + 4 + 16 + 10 + 618 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51124375449 + 453036686400 = 226107^2 + 673080^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 504161061849 - 2¹⁹ = 504160537561 is a prime.

It is a super-2 number, since 2×504161061849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504161061839) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2011789 + ... + 2248469.

Almost surely, 2^504161061849 is an apocalyptic number.

504161061849 is the 710043-rd square number.

504161061849 is the 355022-nd centered octagonal number.

It is an amenable number.

504161061849 is a deficient number, since it is larger than the sum of its proper divisors (224074659910).

504161061849 is an frugal number, since it uses more digits than its factorization.

504161061849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473368 (or 236684 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 504161061849 in words is "five hundred four billion, one hundred sixty-one million, sixty-one thousand, eight hundred forty-nine".