4282387878649 has 2 divisors, whose sum is σ = 4282387878650. Its totient is φ = 4282387878648.

The previous prime is 4282387878647. The next prime is 4282387878653. The reversal of 4282387878649 is 9468787832824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4266352215225 + 16035663424 = 2065515^2 + 126632^2 .

It is a cyclic number.

It is not a de Polignac number, because 4282387878649 - 2¹ = 4282387878647 is a prime.

Together with 4282387878647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4282387878641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2141193939324 + 2141193939325.

It is an arithmetic number, because the mean of its divisors is an integer number (2141193939325).

Almost surely, 2^{4282387878649} is an apocalyptic number.

It is an amenable number.

4282387878649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4282387878649 is an equidigital number, since it uses as much as digits as its factorization.

4282387878649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2080899072, while the sum is 76.

The spelling of 4282387878649 in words is "four trillion, two hundred eighty-two billion, three hundred eighty-seven million, eight hundred seventy-eight thousand, six hundred forty-nine".