8538685405 has 8 divisors (see below), whose sum is σ = 10785708000. Its totient is φ = 6471424656.

The previous prime is 8538685381. The next prime is 8538685409. The reversal of 8538685405 is 5045868358.

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

It is a cyclic number.

It is not a de Polignac number, because 8538685405 - 2⁷ = 8538685277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538685409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44940355 + ... + 44940544.

It is an arithmetic number, because the mean of its divisors is an integer number (1348213500).

Almost surely, 2^8538685405 is an apocalyptic number.

It is an amenable number.

8538685405 is a deficient number, since it is larger than the sum of its proper divisors (2247022595).

8538685405 is a wasteful number, since it uses less digits than its factorization.

8538685405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89880923.

The product of its (nonzero) digits is 4608000, while the sum is 52.

The square root of 8538685405 is about 92405.0074671281. The cubic root of 8538685405 is about 2043.9189536590.

The spelling of 8538685405 in words is "eight billion, five hundred thirty-eight million, six hundred eighty-five thousand, four hundred five".