134191663 has 2 divisors, whose sum is σ = 134191664. Its totient is φ = 134191662.

The previous prime is 134191649. The next prime is 134191667. The reversal of 134191663 is 366191431.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (366191431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134191663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134191667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67095831 + 67095832.

It is an arithmetic number, because the mean of its divisors is an integer number (67095832).

Almost surely, 2^134191663 is an apocalyptic number.

134191663 is a deficient number, since it is larger than the sum of its proper divisors (1).

134191663 is an equidigital number, since it uses as much as digits as its factorization.

134191663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 134191663 is about 11584.1125253513. The cubic root of 134191663 is about 511.9668544929.

The spelling of 134191663 in words is "one hundred thirty-four million, one hundred ninety-one thousand, six hundred sixty-three".