1022879257 has 2 divisors, whose sum is σ = 1022879258. Its totient is φ = 1022879256.

The previous prime is 1022879251. The next prime is 1022879353. The reversal of 1022879257 is 7529782201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610139401 + 412739856 = 24701^2 + 20316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022879257 - 2¹⁹ = 1022354969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022879251) 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, 511439628 + 511439629.

It is an arithmetic number, because the mean of its divisors is an integer number (511439629).

Almost surely, 2^1022879257 is an apocalyptic number.

It is an amenable number.

1022879257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022879257 is an equidigital number, since it uses as much as digits as its factorization.

1022879257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 1022879257 is about 31982.4835964939. The cubic root of 1022879257 is about 1007.5689849260.

The spelling of 1022879257 in words is "one billion, twenty-two million, eight hundred seventy-nine thousand, two hundred fifty-seven".