1127028649 has 2 divisors, whose sum is σ = 1127028650. Its totient is φ = 1127028648.

The previous prime is 1127028593. The next prime is 1127028671. The reversal of 1127028649 is 9468207211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055795049 + 71233600 = 32493^2 + 8440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127028649 - 2⁷ = 1127028521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127028349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563514324 + 563514325.

It is an arithmetic number, because the mean of its divisors is an integer number (563514325).

Almost surely, 2^1127028649 is an apocalyptic number.

It is an amenable number.

1127028649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127028649 is an equidigital number, since it uses as much as digits as its factorization.

1127028649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1127028649 is about 33571.2473554380. The cubic root of 1127028649 is about 1040.6666857611. Note that the first 4 decimals are identical.

The spelling of 1127028649 in words is "one billion, one hundred twenty-seven million, twenty-eight thousand, six hundred forty-nine".