1320168191 has 8 divisors (see below), whose sum is σ = 1379044224. Its totient is φ = 1261415320.

The previous prime is 1320168173. The next prime is 1320168197. The reversal of 1320168191 is 1918610231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320168191 - 2²² = 1315973887 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 (1320168197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8525 + ... + 52086.

It is an arithmetic number, because the mean of its divisors is an integer number (172380528).

Almost surely, 2^1320168191 is an apocalyptic number.

1320168191 is a deficient number, since it is larger than the sum of its proper divisors (58876033).

1320168191 is an equidigital number, since it uses as much as digits as its factorization.

1320168191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61581.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1320168191 is about 36334.1188279006. The cubic root of 1320168191 is about 1097.0078991694.

The spelling of 1320168191 in words is "one billion, three hundred twenty million, one hundred sixty-eight thousand, one hundred ninety-one".