538533643 has 4 divisors (see below), whose sum is σ = 555905728. Its totient is φ = 521161560.

The previous prime is 538533641. The next prime is 538533649. The reversal of 538533643 is 346335835.

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

It is a cyclic number.

It is not a de Polignac number, because 538533643 - 2¹ = 538533641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 538533596 and 538533605.

It is not an unprimeable number, because it can be changed into a prime (538533641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8685996 + ... + 8686057.

It is an arithmetic number, because the mean of its divisors is an integer number (138976432).

Almost surely, 2^538533643 is an apocalyptic number.

538533643 is a deficient number, since it is larger than the sum of its proper divisors (17372085).

538533643 is a wasteful number, since it uses less digits than its factorization.

538533643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17372084.

The product of its digits is 388800, while the sum is 40.

The square root of 538533643 is about 23206.3276500182. The cubic root of 538533643 is about 813.5875232144.

The spelling of 538533643 in words is "five hundred thirty-eight million, five hundred thirty-three thousand, six hundred forty-three".