538808645 has 8 divisors (see below), whose sum is σ = 647037720. Its totient is φ = 430735360.

The previous prime is 538808597. The next prime is 538808651. The reversal of 538808645 is 546808835.

It can be written as a sum of positive squares in 4 ways, for example, as 75655204 + 463153441 = 8698^2 + 21521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 538808645 - 2¹⁶ = 538743109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 538808645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31196 + ... + 45285.

It is an arithmetic number, because the mean of its divisors is an integer number (80879715).

Almost surely, 2^538808645 is an apocalyptic number.

It is an amenable number.

538808645 is a deficient number, since it is larger than the sum of its proper divisors (108229075).

538808645 is a wasteful number, since it uses less digits than its factorization.

538808645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77895.

The product of its (nonzero) digits is 921600, while the sum is 47.

The square root of 538808645 is about 23212.2520449869. The cubic root of 538808645 is about 813.7259857016.

The spelling of 538808645 in words is "five hundred thirty-eight million, eight hundred eight thousand, six hundred forty-five".