1128154487 has 2 divisors, whose sum is σ = 1128154488. Its totient is φ = 1128154486.

The previous prime is 1128154463. The next prime is 1128154501. The reversal of 1128154487 is 7844518211.

It is a strong prime.

It is an emirp because it is prime and its reverse (7844518211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128154487 - 2¹⁰ = 1128153463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128154787) 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, 564077243 + 564077244.

It is an arithmetic number, because the mean of its divisors is an integer number (564077244).

Almost surely, 2^1128154487 is an apocalyptic number.

1128154487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128154487 is an equidigital number, since it uses as much as digits as its factorization.

1128154487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The square root of 1128154487 is about 33588.0110604960. The cubic root of 1128154487 is about 1041.0130928642.

The spelling of 1128154487 in words is "one billion, one hundred twenty-eight million, one hundred fifty-four thousand, four hundred eighty-seven".