1028260061 has 2 divisors, whose sum is σ = 1028260062. Its totient is φ = 1028260060.

The previous prime is 1028260027. The next prime is 1028260063. The reversal of 1028260061 is 1600628201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1023616036 + 4644025 = 31994^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028260061 - 2⁶ = 1028259997 is a prime.

Together with 1028260063, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1028260061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028260063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514130030 + 514130031.

It is an arithmetic number, because the mean of its divisors is an integer number (514130031).

Almost surely, 2^1028260061 is an apocalyptic number.

It is an amenable number.

1028260061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028260061 is an equidigital number, since it uses as much as digits as its factorization.

1028260061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1028260061 is about 32066.4943671740. The cubic root of 1028260061 is about 1009.3326510056.

Adding to 1028260061 its reverse (1600628201), we get a palindrome (2628888262).

The spelling of 1028260061 in words is "one billion, twenty-eight million, two hundred sixty thousand, sixty-one".