1331210849 has 4 divisors (see below), whose sum is σ = 1340145300. Its totient is φ = 1322276400.

The previous prime is 1331210843. The next prime is 1331210863. The reversal of 1331210849 is 9480121331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 492529249 + 838681600 = 22193^2 + 28960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331210849 - 2¹⁶ = 1331145313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331210843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4467002 + ... + 4467299.

It is an arithmetic number, because the mean of its divisors is an integer number (335036325).

Almost surely, 2^1331210849 is an apocalyptic number.

It is an amenable number.

1331210849 is a deficient number, since it is larger than the sum of its proper divisors (8934451).

1331210849 is an equidigital number, since it uses as much as digits as its factorization.

1331210849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934450.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1331210849 is about 36485.7622779078. The cubic root of 1331210849 is about 1100.0580820571.

The spelling of 1331210849 in words is "one billion, three hundred thirty-one million, two hundred ten thousand, eight hundred forty-nine".