1320132091 has 4 divisors (see below), whose sum is σ = 1320249384. Its totient is φ = 1320014800.

The previous prime is 1320132089. The next prime is 1320132097. The reversal of 1320132091 is 1902310231.

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 1320132091 - 2¹ = 1320132089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320132097) 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, 39730 + ... + 64951.

It is an arithmetic number, because the mean of its divisors is an integer number (330062346).

Almost surely, 2^1320132091 is an apocalyptic number.

1320132091 is a deficient number, since it is larger than the sum of its proper divisors (117293).

1320132091 is a wasteful number, since it uses less digits than its factorization.

1320132091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117292.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1320132091 is about 36333.6220462535. The cubic root of 1320132091 is about 1096.9978998510.

The spelling of 1320132091 in words is "one billion, three hundred twenty million, one hundred thirty-two thousand, ninety-one".