1002256049 has 2 divisors, whose sum is σ = 1002256050. Its totient is φ = 1002256048.

The previous prime is 1002256019. The next prime is 1002256051. The reversal of 1002256049 is 9406522001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692742400 + 309513649 = 26320^2 + 17593^2 .

It is an emirp because it is prime and its reverse (9406522001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002256049 - 2¹⁶ = 1002190513 is a prime.

Together with 1002256051, 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 (1002256019) 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 as a sum of consecutive naturals, namely, 501128024 + 501128025.

It is an arithmetic number, because the mean of its divisors is an integer number (501128025).

Almost surely, 2^1002256049 is an apocalyptic number.

It is an amenable number.

1002256049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002256049 is an equidigital number, since it uses as much as digits as its factorization.

1002256049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1002256049 is about 31658.4277720799. The cubic root of 1002256049 is about 1000.7514515125.

The spelling of 1002256049 in words is "one billion, two million, two hundred fifty-six thousand, forty-nine".