1128911653 has 2 divisors, whose sum is σ = 1128911654. Its totient is φ = 1128911652.

The previous prime is 1128911611. The next prime is 1128911669. The reversal of 1128911653 is 3561198211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1040514049 + 88397604 = 32257^2 + 9402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128911653 - 2⁹ = 1128911141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128911603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564455826 + 564455827.

It is an arithmetic number, because the mean of its divisors is an integer number (564455827).

Almost surely, 2^1128911653 is an apocalyptic number.

It is an amenable number.

1128911653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128911653 is an equidigital number, since it uses as much as digits as its factorization.

1128911653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 1128911653 is about 33599.2805428926. The cubic root of 1128911653 is about 1041.2459343339.

The spelling of 1128911653 in words is "one billion, one hundred twenty-eight million, nine hundred eleven thousand, six hundred fifty-three".