8538205765 has 4 divisors (see below), whose sum is σ = 10245846924. Its totient is φ = 6830564608.

The previous prime is 8538205757. The next prime is 8538205789. The reversal of 8538205765 is 5675028358.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4853351556 + 3684854209 = 69666^2 + 60703^2 .

It is a cyclic number.

It is not a de Polignac number, because 8538205765 - 2³ = 8538205757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853820572 + ... + 853820581.

It is an arithmetic number, because the mean of its divisors is an integer number (2561461731).

Almost surely, 2^8538205765 is an apocalyptic number.

It is an amenable number.

8538205765 is a deficient number, since it is larger than the sum of its proper divisors (1707641159).

8538205765 is a wasteful number, since it uses less digits than its factorization.

8538205765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707641158.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The square root of 8538205765 is about 92402.4121167841. The cubic root of 8538205765 is about 2043.8806822078.

The spelling of 8538205765 in words is "eight billion, five hundred thirty-eight million, two hundred five thousand, seven hundred sixty-five".