134845905 has 16 divisors (see below), whose sum is σ = 216949824. Its totient is φ = 71519040.

The previous prime is 134845903. The next prime is 134845913. The reversal of 134845905 is 509548431.

It is not a de Polignac number, because 134845905 - 2¹ = 134845903 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134845903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22119 + ... + 27548.

It is an arithmetic number, because the mean of its divisors is an integer number (13559364).

Almost surely, 2^134845905 is an apocalyptic number.

134845905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134845905 is a deficient number, since it is larger than the sum of its proper divisors (82103919).

134845905 is a wasteful number, since it uses less digits than its factorization.

134845905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49856.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 134845905 is about 11612.3169522710. The cubic root of 134845905 is about 512.7975254374.

The spelling of 134845905 in words is "one hundred thirty-four million, eight hundred forty-five thousand, nine hundred five".