2164093405 has 8 divisors (see below), whose sum is σ = 2597343192. Its totient is φ = 1730987328.

The previous prime is 2164093357. The next prime is 2164093409. The reversal of 2164093405 is 5043904612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58568409 + 2105524996 = 7653^2 + 45886^2 .

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 2164093405 - 2⁹ = 2164092893 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 (2164093409) 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, 579 + ... + 65791.

It is an arithmetic number, because the mean of its divisors is an integer number (324667899).

Almost surely, 2^2164093405 is an apocalyptic number.

It is an amenable number.

2164093405 is a deficient number, since it is larger than the sum of its proper divisors (433249787).

2164093405 is an equidigital number, since it uses as much as digits as its factorization.

2164093405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71855.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2164093405 is about 46519.8173362708. The cubic root of 2164093405 is about 1293.4768703765.

The spelling of 2164093405 in words is "two billion, one hundred sixty-four million, ninety-three thousand, four hundred five".