2736291421 has 4 divisors (see below), whose sum is σ = 2736417244. Its totient is φ = 2736165600.

The previous prime is 2736291413. The next prime is 2736291427. The reversal of 2736291421 is 1241926372.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1485254521 + 1251036900 = 38539^2 + 35370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2736291421 - 2³ = 2736291413 is a prime.

It is a deceptive number, since it divides R_2736291420.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2736291427) 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 3 ways as a sum of consecutive naturals, for example, 20970 + ... + 76891.

It is an arithmetic number, because the mean of its divisors is an integer number (684104311).

Almost surely, 2^2736291421 is an apocalyptic number.

2736291421 is the 27961-st nonagonal number.

It is an amenable number.

2736291421 is a deficient number, since it is larger than the sum of its proper divisors (125823).

2736291421 is an equidigital number, since it uses as much as digits as its factorization.

2736291421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125822.

The product of its digits is 36288, while the sum is 37.

The square root of 2736291421 is about 52309.5729384211. The cubic root of 2736291421 is about 1398.6877876316.

The spelling of 2736291421 in words is "two billion, seven hundred thirty-six million, two hundred ninety-one thousand, four hundred twenty-one".