1320799149 has 8 divisors (see below), whose sum is σ = 1956739520. Its totient is φ = 880532748.

The previous prime is 1320799141. The next prime is 1320799153. The reversal of 1320799149 is 9419970231.

It is not a de Polignac number, because 1320799149 - 2³ = 1320799141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320799141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24459217 + ... + 24459270.

It is an arithmetic number, because the mean of its divisors is an integer number (244592440).

Almost surely, 2^1320799149 is an apocalyptic number.

It is an amenable number.

1320799149 is a deficient number, since it is larger than the sum of its proper divisors (635940371).

1320799149 is an equidigital number, since it uses as much as digits as its factorization.

1320799149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48918496 (or 48918490 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 1320799149 is about 36342.8005112429. The cubic root of 1320799149 is about 1097.1826384371.

The spelling of 1320799149 in words is "one billion, three hundred twenty million, seven hundred ninety-nine thousand, one hundred forty-nine".