3742821449 has 2 divisors, whose sum is σ = 3742821450. Its totient is φ = 3742821448.

The previous prime is 3742821431. The next prime is 3742821451. The reversal of 3742821449 is 9441282473.

3742821449 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2945775625 + 797045824 = 54275^2 + 28232^2 .

It is a cyclic number.

It is not a de Polignac number, because 3742821449 - 2⁸ = 3742821193 is a prime.

Together with 3742821451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3742821479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1871410724 + 1871410725.

It is an arithmetic number, because the mean of its divisors is an integer number (1871410725).

Almost surely, 2^3742821449 is an apocalyptic number.

It is an amenable number.

3742821449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3742821449 is an equidigital number, since it uses as much as digits as its factorization.

3742821449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 3742821449 is about 61178.6028689770. The cubic root of 3742821449 is about 1552.6242674163.

The spelling of 3742821449 in words is "three billion, seven hundred forty-two million, eight hundred twenty-one thousand, four hundred forty-nine".