134161905 has 8 divisors (see below), whose sum is σ = 214659072. Its totient is φ = 71553008.

The previous prime is 134161901. The next prime is 134161919. The reversal of 134161905 is 509161431.

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 134161905 - 2² = 134161901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134161901) 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 7 ways as a sum of consecutive naturals, for example, 4472049 + ... + 4472078.

It is an arithmetic number, because the mean of its divisors is an integer number (26832384).

Almost surely, 2^134161905 is an apocalyptic number.

134161905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134161905 is a deficient number, since it is larger than the sum of its proper divisors (80497167).

134161905 is an equidigital number, since it uses as much as digits as its factorization.

134161905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944135.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 134161905 is about 11582.8280225513. The cubic root of 134161905 is about 511.9290075417.

The spelling of 134161905 in words is "one hundred thirty-four million, one hundred sixty-one thousand, nine hundred five".