134671861 has 2 divisors, whose sum is σ = 134671862. Its totient is φ = 134671860.

The previous prime is 134671847. The next prime is 134671871. The reversal of 134671861 is 168176431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68574961 + 66096900 = 8281^2 + 8130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134671861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134671861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134671811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67335930 + 67335931.

It is an arithmetic number, because the mean of its divisors is an integer number (67335931).

Almost surely, 2^134671861 is an apocalyptic number.

It is an amenable number.

134671861 is a deficient number, since it is larger than the sum of its proper divisors (1).

134671861 is an equidigital number, since it uses as much as digits as its factorization.

134671861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 134671861 is about 11604.8205931845. The cubic root of 134671861 is about 512.5768099035.

The spelling of 134671861 in words is "one hundred thirty-four million, six hundred seventy-one thousand, eight hundred sixty-one".