1128774061 has 2 divisors, whose sum is σ = 1128774062. Its totient is φ = 1128774060.

The previous prime is 1128774029. The next prime is 1128774161. The reversal of 1128774061 is 1604778211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888338025 + 240436036 = 29805^2 + 15506^2 .

It is an emirp because it is prime and its reverse (1604778211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128774061 - 2⁵ = 1128774029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128774061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128774161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564387030 + 564387031.

It is an arithmetic number, because the mean of its divisors is an integer number (564387031).

Almost surely, 2^1128774061 is an apocalyptic number.

It is an amenable number.

1128774061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128774061 is an equidigital number, since it uses as much as digits as its factorization.

1128774061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1128774061 is about 33597.2329366571. The cubic root of 1128774061 is about 1041.2036301875.

The spelling of 1128774061 in words is "one billion, one hundred twenty-eight million, seven hundred seventy-four thousand, sixty-one".