81134058 has 16 divisors (see below), whose sum is σ = 162762336. Its totient is φ = 26962320.

The previous prime is 81134057. The next prime is 81134063. The reversal of 81134058 is 85043118.

It is not an unprimeable number, because it can be changed into a prime (81134051) 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, 18441 + ... + 22412.

It is an arithmetic number, because the mean of its divisors is an integer number (10172646).

Almost surely, 2^81134058 is an apocalyptic number.

81134058 is an abundant number, since it is smaller than the sum of its proper divisors (81628278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81134058 is a wasteful number, since it uses less digits than its factorization.

81134058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41189.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 81134058 is about 9007.4445876730. Note that the first 3 decimals coincide. The cubic root of 81134058 is about 432.9134371742.

The spelling of 81134058 in words is "eighty-one million, one hundred thirty-four thousand, fifty-eight".