1365072745 has 4 divisors (see below), whose sum is σ = 1638087300. Its totient is φ = 1092058192.

The previous prime is 1365072733. The next prime is 1365072773. The reversal of 1365072745 is 5472705631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 693848281 + 671224464 = 26341^2 + 25908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365072745 - 2¹³ = 1365064553 is a prime.

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 junction number, because it is equal to n+sod(n) for n = 1365072698 and 1365072707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136507270 + ... + 136507279.

It is an arithmetic number, because the mean of its divisors is an integer number (409521825).

Almost surely, 2^1365072745 is an apocalyptic number.

It is an amenable number.

1365072745 is a deficient number, since it is larger than the sum of its proper divisors (273014555).

1365072745 is an equidigital number, since it uses as much as digits as its factorization.

1365072745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273014554.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 1365072745 is about 36946.8908705455. The cubic root of 1365072745 is about 1109.3074556192.

The spelling of 1365072745 in words is "one billion, three hundred sixty-five million, seventy-two thousand, seven hundred forty-five".