636157134 has 12 divisors (see below), whose sum is σ = 1378340496. Its totient is φ = 212052372.

The previous prime is 636157133. The next prime is 636157201. The reversal of 636157134 is 431751636.

636157134 is a `hidden beast` number, since 6 + 3 + 615 + 7 + 1 + 34 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636157133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17671014 + ... + 17671049.

It is an arithmetic number, because the mean of its divisors is an integer number (114861708).

Almost surely, 2^636157134 is an apocalyptic number.

636157134 is an abundant number, since it is smaller than the sum of its proper divisors (742183362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636157134 is a wasteful number, since it uses less digits than its factorization.

636157134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35342071 (or 35342068 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 636157134 is about 25222.1556176311. The cubic root of 636157134 is about 860.0455780784.

The spelling of 636157134 in words is "six hundred thirty-six million, one hundred fifty-seven thousand, one hundred thirty-four".