134671961 has 2 divisors, whose sum is σ = 134671962. Its totient is φ = 134671960.

The previous prime is 134671951. The next prime is 134672009. The reversal of 134671961 is 169176431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133633600 + 1038361 = 11560^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 134671961 - 2¹⁸ = 134409817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134671951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67335980 + 67335981.

It is an arithmetic number, because the mean of its divisors is an integer number (67335981).

Almost surely, 2^134671961 is an apocalyptic number.

It is an amenable number.

134671961 is a deficient number, since it is larger than the sum of its proper divisors (1).

134671961 is an equidigital number, since it uses as much as digits as its factorization.

134671961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 134671961 is about 11604.8249017381. The cubic root of 134671961 is about 512.5769367740.

The spelling of 134671961 in words is "one hundred thirty-four million, six hundred seventy-one thousand, nine hundred sixty-one".