134851817 has 2 divisors, whose sum is σ = 134851818. Its totient is φ = 134851816.

The previous prime is 134851763. The next prime is 134851831. The reversal of 134851817 is 718158431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133726096 + 1125721 = 11564^2 + 1061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134851817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134851877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67425908 + 67425909.

It is an arithmetic number, because the mean of its divisors is an integer number (67425909).

Almost surely, 2^134851817 is an apocalyptic number.

It is an amenable number.

134851817 is a deficient number, since it is larger than the sum of its proper divisors (1).

134851817 is an equidigital number, since it uses as much as digits as its factorization.

134851817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 134851817 is about 11612.5715067766. The cubic root of 134851817 is about 512.8050194598.

The spelling of 134851817 in words is "one hundred thirty-four million, eight hundred fifty-one thousand, eight hundred seventeen".