134585813 has 2 divisors, whose sum is σ = 134585814. Its totient is φ = 134585812.

The previous prime is 134585807. The next prime is 134585879. The reversal of 134585813 is 318585431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108951844 + 25633969 = 10438^2 + 5063^2 .

It is an emirp because it is prime and its reverse (318585431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134585813 - 2⁶ = 134585749 is a prime.

It is a super-2 number, since 2×134585813² = 36226682121741938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134515813) 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, 67292906 + 67292907.

It is an arithmetic number, because the mean of its divisors is an integer number (67292907).

Almost surely, 2^134585813 is an apocalyptic number.

It is an amenable number.

134585813 is a deficient number, since it is larger than the sum of its proper divisors (1).

134585813 is an equidigital number, since it uses as much as digits as its factorization.

134585813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 134585813 is about 11601.1125759558. The cubic root of 134585813 is about 512.4676170695.

The spelling of 134585813 in words is "one hundred thirty-four million, five hundred eighty-five thousand, eight hundred thirteen".