134644157 has 4 divisors (see below), whose sum is σ = 135612960. Its totient is φ = 133675356.

The previous prime is 134644151. The next prime is 134644163. The reversal of 134644157 is 751446431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (134644151) and next prime (134644163).

It is a cyclic number.

It is not a de Polignac number, because 134644157 - 2²² = 130449853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134644151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484193 + ... + 484470.

It is an arithmetic number, because the mean of its divisors is an integer number (33903240).

Almost surely, 2^134644157 is an apocalyptic number.

It is an amenable number.

134644157 is a deficient number, since it is larger than the sum of its proper divisors (968803).

134644157 is an equidigital number, since it uses as much as digits as its factorization.

134644157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968802.

The product of its digits is 40320, while the sum is 35.

The square root of 134644157 is about 11603.6268898996. The cubic root of 134644157 is about 512.5416592747.

The spelling of 134644157 in words is "one hundred thirty-four million, six hundred forty-four thousand, one hundred fifty-seven".