1128745591 has 2 divisors, whose sum is σ = 1128745592. Its totient is φ = 1128745590.

The previous prime is 1128745531. The next prime is 1128745609. The reversal of 1128745591 is 1955478211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128745591 - 2⁷ = 1128745463 is a prime.

It is a super-3 number, since 3×1128745591³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128745531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564372795 + 564372796.

It is an arithmetic number, because the mean of its divisors is an integer number (564372796).

Almost surely, 2^1128745591 is an apocalyptic number.

1128745591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128745591 is an equidigital number, since it uses as much as digits as its factorization.

1128745591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 43.

The square root of 1128745591 is about 33596.8092383786. The cubic root of 1128745591 is about 1041.1948763492.

The spelling of 1128745591 in words is "one billion, one hundred twenty-eight million, seven hundred forty-five thousand, five hundred ninety-one".