2136297821 has 8 divisors (see below), whose sum is σ = 2442405504. Its totient is φ = 1830420720.

The previous prime is 2136297817. The next prime is 2136297841. The reversal of 2136297821 is 1287926312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2136297821 - 2² = 2136297817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136297841) 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 7 ways as a sum of consecutive naturals, for example, 37310 + ... + 75263.

It is an arithmetic number, because the mean of its divisors is an integer number (305300688).

Almost surely, 2^2136297821 is an apocalyptic number.

It is an amenable number.

2136297821 is a deficient number, since it is larger than the sum of its proper divisors (306107683).

2136297821 is a wasteful number, since it uses less digits than its factorization.

2136297821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115291.

The product of its digits is 72576, while the sum is 41.

The square root of 2136297821 is about 46220.1019146432. The cubic root of 2136297821 is about 1287.9151912720.

The spelling of 2136297821 in words is "two billion, one hundred thirty-six million, two hundred ninety-seven thousand, eight hundred twenty-one".