134851815 has 48 divisors (see below), whose sum is σ = 270566400. Its totient is φ = 60854976.

The previous prime is 134851763. The next prime is 134851817. The reversal of 134851815 is 518158431.

134851815 is a `hidden beast` number, since 134 + 8 + 518 + 1 + 5 = 666.

It is not a de Polignac number, because 134851815 - 2¹⁰ = 134850791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134851815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134851817) 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 in 47 ways as a sum of consecutive naturals, for example, 22176 + ... + 27594.

It is an arithmetic number, because the mean of its divisors is an integer number (5636800).

Almost surely, 2^134851815 is an apocalyptic number.

134851815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

134851815 is an abundant number, since it is smaller than the sum of its proper divisors (135714585).

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

134851815 is a wasteful number, since it uses less digits than its factorization.

134851815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516 (or 5513 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 134851815 is about 11612.5714206630. The cubic root of 134851815 is about 512.8050169246.

The spelling of 134851815 in words is "one hundred thirty-four million, eight hundred fifty-one thousand, eight hundred fifteen".