1365320145 has 64 divisors (see below), whose sum is σ = 2718720000. Its totient is φ = 570882816.

The previous prime is 1365320141. The next prime is 1365320147. The reversal of 1365320145 is 5410235631.

It is not a de Polignac number, because 1365320145 - 2² = 1365320141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1365320141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46056 + ... + 69654.

It is an arithmetic number, because the mean of its divisors is an integer number (42480000).

Almost surely, 2^1365320145 is an apocalyptic number.

1365320145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1365320145 is a deficient number, since it is larger than the sum of its proper divisors (1353399855).

1365320145 is a wasteful number, since it uses less digits than its factorization.

1365320145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23662.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1365320145 is about 36950.2387678348. The cubic root of 1365320145 is about 1109.3744669653.

Adding to 1365320145 its reverse (5410235631), we get a palindrome (6775555776).

The spelling of 1365320145 in words is "one billion, three hundred sixty-five million, three hundred twenty thousand, one hundred forty-five".