1028356601 has 2 divisors, whose sum is σ = 1028356602. Its totient is φ = 1028356600.

The previous prime is 1028356591. The next prime is 1028356619. The reversal of 1028356601 is 1066538201.

1028356601 = 22675² + 22676².

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514200976 + 514155625 = 22676^2 + 22675^2 .

It is an emirp because it is prime and its reverse (1066538201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028356601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1028356631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514178300 + 514178301.

It is an arithmetic number, because the mean of its divisors is an integer number (514178301).

Almost surely, 2^1028356601 is an apocalyptic number.

1028356601 is the 22676-th centered square number.

It is an amenable number.

1028356601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028356601 is an equidigital number, since it uses as much as digits as its factorization.

1028356601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1028356601 is about 32067.9996413871. Note that the first 3 decimals coincide. The cubic root of 1028356601 is about 1009.3642376728.

The spelling of 1028356601 in words is "one billion, twenty-eight million, three hundred fifty-six thousand, six hundred one".