1320368278 has 4 divisors (see below), whose sum is σ = 1980552420. Its totient is φ = 660184138.

The previous prime is 1320368243. The next prime is 1320368279. The reversal of 1320368278 is 8728630231.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320368278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320368279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330092068 + ... + 330092071.

It is an arithmetic number, because the mean of its divisors is an integer number (495138105).

Almost surely, 2^1320368278 is an apocalyptic number.

1320368278 is a deficient number, since it is larger than the sum of its proper divisors (660184142).

1320368278 is an equidigital number, since it uses as much as digits as its factorization.

1320368278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660184141.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1320368278 is about 36336.8721548787. The cubic root of 1320368278 is about 1097.0633178483.

The spelling of 1320368278 in words is "one billion, three hundred twenty million, three hundred sixty-eight thousand, two hundred seventy-eight".