2196165391 has 8 divisors (see below), whose sum is σ = 2510987040. Its totient is φ = 1881614688.

The previous prime is 2196165353. The next prime is 2196165409. The reversal of 2196165391 is 1935616912.

2196165391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2196165391 - 2¹⁵ = 2196132623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196163391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50056 + ... + 83053.

It is an arithmetic number, because the mean of its divisors is an integer number (313873380).

Almost surely, 2^2196165391 is an apocalyptic number.

2196165391 is a deficient number, since it is larger than the sum of its proper divisors (314821649).

2196165391 is a wasteful number, since it uses less digits than its factorization.

2196165391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135473.

The product of its digits is 87480, while the sum is 43.

The square root of 2196165391 is about 46863.2627011820. The cubic root of 2196165391 is about 1299.8353619906.

The spelling of 2196165391 in words is "two billion, one hundred ninety-six million, one hundred sixty-five thousand, three hundred ninety-one".