1373364665 has 16 divisors (see below), whose sum is σ = 1663315968. Its totient is φ = 1088531136.

The previous prime is 1373364649. The next prime is 1373364679. The reversal of 1373364665 is 5664633731.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1373364665 - 2⁴ = 1373364649 is a prime.

It is a super-2 number, since 2×1373364665² = 3772261006141124450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769364 + ... + 771146.

It is an arithmetic number, because the mean of its divisors is an integer number (103957248).

Almost surely, 2^1373364665 is an apocalyptic number.

It is an amenable number.

1373364665 is a deficient number, since it is larger than the sum of its proper divisors (289951303).

1373364665 is a wasteful number, since it uses less digits than its factorization.

1373364665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128.

The product of its digits is 816480, while the sum is 44.

The square root of 1373364665 is about 37058.9350224747. The cubic root of 1373364665 is about 1111.5490276742.

The spelling of 1373364665 in words is "one billion, three hundred seventy-three million, three hundred sixty-four thousand, six hundred sixty-five".