5378192665 has 4 divisors (see below), whose sum is σ = 6453831204. Its totient is φ = 4302554128.

The previous prime is 5378192663. The next prime is 5378192717. The reversal of 5378192665 is 5662918735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5662918735 = 5 ⋅1132583747.

It can be written as a sum of positive squares in 2 ways, for example, as 914215696 + 4463976969 = 30236^2 + 66813^2 .

It is a cyclic number.

It is not a de Polignac number, because 5378192665 - 2¹ = 5378192663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5378192663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537819262 + ... + 537819271.

It is an arithmetic number, because the mean of its divisors is an integer number (1613457801).

Almost surely, 2^5378192665 is an apocalyptic number.

It is an amenable number.

5378192665 is a deficient number, since it is larger than the sum of its proper divisors (1075638539).

5378192665 is a wasteful number, since it uses less digits than its factorization.

5378192665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075638538.

The product of its digits is 2721600, while the sum is 52.

The square root of 5378192665 is about 73336.1620552917. The cubic root of 5378192665 is about 1752.0457887203.

The spelling of 5378192665 in words is "five billion, three hundred seventy-eight million, one hundred ninety-two thousand, six hundred sixty-five".