538378790049 has 15 divisors (see below), whose sum is σ = 804254724097. Its totient is φ = 358914790908.

The previous prime is 538378789967. The next prime is 538378790051. The reversal of 538378790049 is 940097873835.

The square root of 538378790049 is 733743.

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

538378790049 is a `hidden beast` number, since 538 + 3 + 7 + 8 + 7 + 90 + 0 + 4 + 9 = 666.

It is not a de Polignac number, because 538378790049 - 2¹⁵ = 538378757281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538378090049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6562924 + ... + 6644450.

Almost surely, 2^538378790049 is an apocalyptic number.

538378790049 is the 733743-rd square number.

538378790049 is the 366872-nd centered octagonal number.

It is an amenable number.

538378790049 is a deficient number, since it is larger than the sum of its proper divisors (265875934048).

538378790049 is an frugal number, since it uses more digits than its factorization.

538378790049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163066 (or 81530 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 538378790049 in words is "five hundred thirty-eight billion, three hundred seventy-eight million, seven hundred ninety thousand, forty-nine".