3844128245 has 4 divisors (see below), whose sum is σ = 4612953900. Its totient is φ = 3075302592.

The previous prime is 3844128131. The next prime is 3844128257. The reversal of 3844128245 is 5428214483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5428214483 = 31 ⋅175103693.

It can be written as a sum of positive squares in 2 ways, for example, as 516107524 + 3328020721 = 22718^2 + 57689^2 .

It is a cyclic number.

It is not a de Polignac number, because 3844128245 - 2²² = 3839933941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384412820 + ... + 384412829.

It is an arithmetic number, because the mean of its divisors is an integer number (1153238475).

Almost surely, 2^3844128245 is an apocalyptic number.

It is an amenable number.

3844128245 is a deficient number, since it is larger than the sum of its proper divisors (768825655).

3844128245 is an equidigital number, since it uses as much as digits as its factorization.

3844128245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768825654.

The product of its digits is 245760, while the sum is 41.

The square root of 3844128245 is about 62001.0342252450. The cubic root of 3844128245 is about 1566.5080198239.

The spelling of 3844128245 in words is "three billion, eight hundred forty-four million, one hundred twenty-eight thousand, two hundred forty-five".