1320066049 has 4 divisors (see below), whose sum is σ = 1322436564. Its totient is φ = 1317695536.

The previous prime is 1320066001. The next prime is 1320066091. The reversal of 1320066049 is 9406600231.

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 466257649 + 853808400 = 21593^2 + 29220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320066049 - 2⁷ = 1320065921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320066049.

It is not an unprimeable number, because it can be changed into a prime (1320166049) 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, 1184422 + ... + 1185535.

It is an arithmetic number, because the mean of its divisors is an integer number (330609141).

Almost surely, 2^1320066049 is an apocalyptic number.

It is an amenable number.

1320066049 is a deficient number, since it is larger than the sum of its proper divisors (2370515).

1320066049 is an equidigital number, since it uses as much as digits as its factorization.

1320066049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370514.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1320066049 is about 36332.7132072462. The cubic root of 1320066049 is about 1096.9796064434.

The spelling of 1320066049 in words is "one billion, three hundred twenty million, sixty-six thousand, forty-nine".