1364441665 has 16 divisors (see below), whose sum is σ = 1692136656. Its totient is φ = 1055488000.

The previous prime is 1364441647. The next prime is 1364441669. The reversal of 1364441665 is 5661444631.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 913006656 + 451435009 = 30216^2 + 21247^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1364441665 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364441669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6286 + ... + 52615.

It is an arithmetic number, because the mean of its divisors is an integer number (105758541).

Almost surely, 2^1364441665 is an apocalyptic number.

It is an amenable number.

1364441665 is a deficient number, since it is larger than the sum of its proper divisors (327694991).

1364441665 is a wasteful number, since it uses less digits than its factorization.

1364441665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59060.

The product of its digits is 207360, while the sum is 40.

The square root of 1364441665 is about 36938.3495164578. The cubic root of 1364441665 is about 1109.1364831295.

The spelling of 1364441665 in words is "one billion, three hundred sixty-four million, four hundred forty-one thousand, six hundred sixty-five".