1136985449 has 8 divisors (see below), whose sum is σ = 1205179560. Its totient is φ = 1068937216.

The previous prime is 1136985361. The next prime is 1136985457. The reversal of 1136985449 is 9445896311.

It can be written as a sum of positive squares in 4 ways, for example, as 322453849 + 814531600 = 17957^2 + 28540^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1136985449 - 2¹² = 1136981353 is a prime.

It is a super-2 number, since 2×1136985449² = 2585471822475463202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1136985397 and 1136985406.

It is not an unprimeable number, because it can be changed into a prime (1136985349) 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 in 7 ways as a sum of consecutive naturals, for example, 20204 + ... + 51789.

It is an arithmetic number, because the mean of its divisors is an integer number (150647445).

Almost surely, 2^1136985449 is an apocalyptic number.

It is an amenable number.

1136985449 is a deficient number, since it is larger than the sum of its proper divisors (68194111).

1136985449 is an equidigital number, since it uses as much as digits as its factorization.

1136985449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72939.

The product of its digits is 933120, while the sum is 50.

The square root of 1136985449 is about 33719.2148336820. The cubic root of 1136985449 is about 1043.7223150461.

The spelling of 1136985449 in words is "one billion, one hundred thirty-six million, nine hundred eighty-five thousand, four hundred forty-nine".