2081357136 has 60 divisors (see below), whose sum is σ = 5895122688. Its totient is φ = 685422912.

The previous prime is 2081357129. The next prime is 2081357137. The reversal of 2081357136 is 6317531802.

2081357136 is a `hidden beast` number, since 2 + 0 + 81 + 3 + 571 + 3 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2081357136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081357137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75120 + ... + 99023.

Almost surely, 2^2081357136 is an apocalyptic number.

It is an amenable number.

2081357136 is an abundant number, since it is smaller than the sum of its proper divisors (3813765552).

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

2081357136 is a wasteful number, since it uses less digits than its factorization.

2081357136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174240 (or 174231 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2081357136 is about 45621.8931654529. The cubic root of 2081357136 is about 1276.7784252578.

Adding to 2081357136 its reverse (6317531802), we get a palindrome (8398888938).

The spelling of 2081357136 in words is "two billion, eighty-one million, three hundred fifty-seven thousand, one hundred thirty-six".