134068019409 has 9 divisors (see below), whose sum is σ = 193655392489. Its totient is φ = 89377947300.

The previous prime is 134068019401. The next prime is 134068019447. The reversal of 134068019409 is 904910860431.

The square root of 134068019409 is 366153.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 134068019409 - 2³ = 134068019401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134068019401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1037434 + ... + 1159484.

Almost surely, 2^134068019409 is an apocalyptic number.

134068019409 is the 366153-rd square number.

134068019409 is the 183077-th centered octagonal number.

It is an amenable number.

134068019409 is a deficient number, since it is larger than the sum of its proper divisors (59587373080).

134068019409 is an frugal number, since it uses more digits than its factorization.

134068019409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244108 (or 122054 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 134068019409 in words is "one hundred thirty-four billion, sixty-eight million, nineteen thousand, four hundred nine".