1320816297 has 8 divisors (see below), whose sum is σ = 1762441056. Its totient is φ = 879867872.

The previous prime is 1320816253. The next prime is 1320816307. The reversal of 1320816297 is 7926180231.

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 1320816297 - 2¹¹ = 1320814249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320816097) 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, 164508 + ... + 172349.

It is an arithmetic number, because the mean of its divisors is an integer number (220305132).

Almost surely, 2^1320816297 is an apocalyptic number.

It is an amenable number.

1320816297 is a deficient number, since it is larger than the sum of its proper divisors (441624759).

1320816297 is a wasteful number, since it uses less digits than its factorization.

1320816297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338167.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1320816297 is about 36343.0364306561. The cubic root of 1320816297 is about 1097.1873866751.

The spelling of 1320816297 in words is "one billion, three hundred twenty million, eight hundred sixteen thousand, two hundred ninety-seven".