1378321097 has 4 divisors (see below), whose sum is σ = 1410375120. Its totient is φ = 1346267076.

The previous prime is 1378321093. The next prime is 1378321111. The reversal of 1378321097 is 7901238731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1378321097 - 2² = 1378321093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378321093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16026947 + ... + 16027032.

It is an arithmetic number, because the mean of its divisors is an integer number (352593780).

Almost surely, 2^1378321097 is an apocalyptic number.

It is an amenable number.

1378321097 is a deficient number, since it is larger than the sum of its proper divisors (32054023).

1378321097 is an equidigital number, since it uses as much as digits as its factorization.

1378321097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32054022.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1378321097 is about 37125.7470901260. The cubic root of 1378321097 is about 1112.8846046732.

The spelling of 1378321097 in words is "one billion, three hundred seventy-eight million, three hundred twenty-one thousand, ninety-seven".