1020266651 has 2 divisors, whose sum is σ = 1020266652. Its totient is φ = 1020266650.

The previous prime is 1020266641. The next prime is 1020266707. The reversal of 1020266651 is 1566620201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020266651 - 2⁶ = 1020266587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020266641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510133325 + 510133326.

It is an arithmetic number, because the mean of its divisors is an integer number (510133326).

Almost surely, 2^1020266651 is an apocalyptic number.

1020266651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020266651 is an equidigital number, since it uses as much as digits as its factorization.

1020266651 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 1020266651 is about 31941.6131558818. The cubic root of 1020266651 is about 1006.7104198756.

Adding to 1020266651 its reverse (1566620201), we get a palindrome (2586886852).

The spelling of 1020266651 in words is "one billion, twenty million, two hundred sixty-six thousand, six hundred fifty-one".