1327791249 has 12 divisors (see below), whose sum is σ = 1918285200. Its totient is φ = 885025944.

The previous prime is 1327791247. The next prime is 1327791251. The reversal of 1327791249 is 9421977231.

It is an interprime number because it is at equal distance from previous prime (1327791247) and next prime (1327791251).

It is not a de Polignac number, because 1327791249 - 2¹ = 1327791247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1327791247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52662 + ... + 73680.

It is an arithmetic number, because the mean of its divisors is an integer number (159857100).

Almost surely, 2^1327791249 is an apocalyptic number.

It is an amenable number.

1327791249 is a deficient number, since it is larger than the sum of its proper divisors (590493951).

1327791249 is a wasteful number, since it uses less digits than its factorization.

1327791249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28044 (or 28041 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 1327791249 is about 36438.8700291324. The cubic root of 1327791249 is about 1099.1153352638.

The spelling of 1327791249 in words is "one billion, three hundred twenty-seven million, seven hundred ninety-one thousand, two hundred forty-nine".