538523865 has 48 divisors (see below), whose sum is σ = 1020988800. Its totient is φ = 260413440.

The previous prime is 538523849. The next prime is 538523879. The reversal of 538523865 is 568325835.

538523865 is a `hidden beast` number, since 538 + 52 + 3 + 8 + 65 = 666.

It is not a de Polignac number, because 538523865 - 2⁴ = 538523849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 538523865.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221044 + ... + 223466.

It is an arithmetic number, because the mean of its divisors is an integer number (21270600).

Almost surely, 2^538523865 is an apocalyptic number.

538523865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

538523865 is a deficient number, since it is larger than the sum of its proper divisors (482464935).

538523865 is a wasteful number, since it uses less digits than its factorization.

538523865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894 (or 2891 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 538523865 is about 23206.1169737636. The cubic root of 538523865 is about 813.5825991600.

The spelling of 538523865 in words is "five hundred thirty-eight million, five hundred twenty-three thousand, eight hundred sixty-five".