1327929491 has 4 divisors (see below), whose sum is σ = 1517633712. Its totient is φ = 1138225272.

The previous prime is 1327929467. The next prime is 1327929509. The reversal of 1327929491 is 1949297231.

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

It is a cyclic number.

It is not a de Polignac number, because 1327929491 - 2¹⁴ = 1327913107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1327929431) 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, 94852100 + ... + 94852113.

It is an arithmetic number, because the mean of its divisors is an integer number (379408428).

Almost surely, 2^1327929491 is an apocalyptic number.

1327929491 is a deficient number, since it is larger than the sum of its proper divisors (189704221).

1327929491 is an equidigital number, since it uses as much as digits as its factorization.

1327929491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189704220.

The product of its digits is 244944, while the sum is 47.

The square root of 1327929491 is about 36440.7668827098. The cubic root of 1327929491 is about 1099.1534784658.

The spelling of 1327929491 in words is "one billion, three hundred twenty-seven million, nine hundred twenty-nine thousand, four hundred ninety-one".