1170255649 has 2 divisors, whose sum is σ = 1170255650. Its totient is φ = 1170255648.

The previous prime is 1170255631. The next prime is 1170255689. The reversal of 1170255649 is 9465520711.

It is an a-pointer prime, because the next prime (1170255689) can be obtained adding 1170255649 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784840225 + 385415424 = 28015^2 + 19632^2 .

It is an emirp because it is prime and its reverse (9465520711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1170255649 - 2⁹ = 1170255137 is a prime.

It is a super-2 number, since 2×1170255649² = 2738996568032822402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1170255689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585127824 + 585127825.

It is an arithmetic number, because the mean of its divisors is an integer number (585127825).

Almost surely, 2^1170255649 is an apocalyptic number.

It is an amenable number.

1170255649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170255649 is an equidigital number, since it uses as much as digits as its factorization.

1170255649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1170255649 is about 34208.9995322868. Note that the first 3 decimals coincide. The cubic root of 1170255649 is about 1053.8049851816.

The spelling of 1170255649 in words is "one billion, one hundred seventy million, two hundred fifty-five thousand, six hundred forty-nine".