538325961849 has 45 divisors (see below), whose sum is σ = 870922120959. Its totient is φ = 331224688080.

The previous prime is 538325961839. The next prime is 538325961863. The reversal of 538325961849 is 948169523835.

The square root of 538325961849 is 733707.

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

538325961849 is a `hidden beast` number, since 5 + 3 + 8 + 3 + 2 + 5 + 9 + 618 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79634018025 + 458691943824 = 282195^2 + 677268^2 .

It is not a de Polignac number, because 538325961849 - 2²⁷ = 538191744121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538325961839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 85840584 + ... + 85846854.

Almost surely, 2^538325961849 is an apocalyptic number.

538325961849 is the 733707-th square number.

538325961849 is the 366854-th centered octagonal number.

It is an amenable number.

538325961849 is a deficient number, since it is larger than the sum of its proper divisors (332596159110).

538325961849 is an frugal number, since it uses more digits than its factorization.

538325961849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12580 (or 6287 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The spelling of 538325961849 in words is "five hundred thirty-eight billion, three hundred twenty-five million, nine hundred sixty-one thousand, eight hundred forty-nine".