1365440545 has 32 divisors (see below), whose sum is σ = 1903673088. Its totient is φ = 920844288.

The previous prime is 1365440521. The next prime is 1365440617. The reversal of 1365440545 is 5450445631.

It is not a de Polignac number, because 1365440545 - 2⁹ = 1365440033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1397097 + ... + 1398073.

It is an arithmetic number, because the mean of its divisors is an integer number (59489784).

Almost surely, 2^1365440545 is an apocalyptic number.

It is an amenable number.

1365440545 is a deficient number, since it is larger than the sum of its proper divisors (538232543).

1365440545 is an equidigital number, since it uses as much as digits as its factorization.

1365440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 1365440545 is about 36951.8679500780. The cubic root of 1365440545 is about 1109.4070758642.

The spelling of 1365440545 in words is "one billion, three hundred sixty-five million, four hundred forty thousand, five hundred forty-five".