1147128049 has 2 divisors, whose sum is σ = 1147128050. Its totient is φ = 1147128048.

The previous prime is 1147128029. The next prime is 1147128067. The reversal of 1147128049 is 9408217411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115092449 + 32035600 = 33393^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147128049 - 2⁹ = 1147127537 is a prime.

It is a super-3 number, since 3×1147128049³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1147127999 and 1147128017.

It is not a weakly prime, because it can be changed into another prime (1147128019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573564024 + 573564025.

It is an arithmetic number, because the mean of its divisors is an integer number (573564025).

Almost surely, 2^1147128049 is an apocalyptic number.

It is an amenable number.

1147128049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147128049 is an equidigital number, since it uses as much as digits as its factorization.

1147128049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1147128049 is about 33869.2788379086. The cubic root of 1147128049 is about 1046.8166774298.

The spelling of 1147128049 in words is "one billion, one hundred forty-seven million, one hundred twenty-eight thousand, forty-nine".