538846509 has 4 divisors (see below), whose sum is σ = 718462016. Its totient is φ = 359231004.

The previous prime is 538846499. The next prime is 538846513. The reversal of 538846509 is 905648835.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 538846509 - 2¹³ = 538838317 is a prime.

It is a super-2 number, since 2×538846509² = 580711120522974162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538846519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89807749 + ... + 89807754.

It is an arithmetic number, because the mean of its divisors is an integer number (179615504).

Almost surely, 2^538846509 is an apocalyptic number.

It is an amenable number.

538846509 is a deficient number, since it is larger than the sum of its proper divisors (179615507).

538846509 is a wasteful number, since it uses less digits than its factorization.

538846509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179615506.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 538846509 is about 23213.0676344166. The cubic root of 538846509 is about 813.7450463949.

The spelling of 538846509 in words is "five hundred thirty-eight million, eight hundred forty-six thousand, five hundred nine".