8166538941 has 32 divisors (see below), whose sum is σ = 12556339200. Its totient is φ = 4669217280.

The previous prime is 8166538937. The next prime is 8166538987. The reversal of 8166538941 is 1498356618.

It is not a de Polignac number, because 8166538941 - 2² = 8166538937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166538841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122605 + ... + 177101.

It is an arithmetic number, because the mean of its divisors is an integer number (392385600).

Almost surely, 2^8166538941 is an apocalyptic number.

It is an amenable number.

8166538941 is a deficient number, since it is larger than the sum of its proper divisors (4389800259).

8166538941 is a wasteful number, since it uses less digits than its factorization.

8166538941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54769.

The product of its digits is 1244160, while the sum is 51.

The square root of 8166538941 is about 90368.9047239149. The cubic root of 8166538941 is about 2013.7830407772.

The spelling of 8166538941 in words is "eight billion, one hundred sixty-six million, five hundred thirty-eight thousand, nine hundred forty-one".