1128001601 has 2 divisors, whose sum is σ = 1128001602. Its totient is φ = 1128001600.

The previous prime is 1128001549. The next prime is 1128001631. The reversal of 1128001601 is 1061008211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613800625 + 514200976 = 24775^2 + 22676^2 .

It is an emirp because it is prime and its reverse (1061008211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128001601 - 2²⁶ = 1060892737 is a prime.

It is a super-2 number, since 2×1128001601² = 2544775223717126402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1128001631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564000800 + 564000801.

It is an arithmetic number, because the mean of its divisors is an integer number (564000801).

Almost surely, 2^1128001601 is an apocalyptic number.

It is an amenable number.

1128001601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128001601 is an equidigital number, since it uses as much as digits as its factorization.

1128001601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 1128001601 is about 33585.7350820255. The cubic root of 1128001601 is about 1040.9660651685.

Adding to 1128001601 its reverse (1061008211), we get a palindrome (2189009812).

The spelling of 1128001601 in words is "one billion, one hundred twenty-eight million, one thousand, six hundred one".