1128633091 has 2 divisors, whose sum is σ = 1128633092. Its totient is φ = 1128633090.

The previous prime is 1128633073. The next prime is 1128633101. The reversal of 1128633091 is 1903368211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128633091 - 2⁷ = 1128632963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128633001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564316545 + 564316546.

It is an arithmetic number, because the mean of its divisors is an integer number (564316546).

Almost surely, 2^1128633091 is an apocalyptic number.

1128633091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128633091 is an equidigital number, since it uses as much as digits as its factorization.

1128633091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1128633091 is about 33595.1349305223. The cubic root of 1128633091 is about 1041.1602838729.

The spelling of 1128633091 in words is "one billion, one hundred twenty-eight million, six hundred thirty-three thousand, ninety-one".