2163404345 has 16 divisors (see below), whose sum is σ = 2664807120. Its totient is φ = 1685472000.

The previous prime is 2163404317. The next prime is 2163404351. The reversal of 2163404345 is 5434043612.

2163404345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 195328576 + 1968075769 = 13976^2 + 44363^2 .

It is not a de Polignac number, because 2163404345 - 2⁶ = 2163404281 is a prime.

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, 4310 + ... + 65919.

It is an arithmetic number, because the mean of its divisors is an integer number (166550445).

Almost surely, 2^2163404345 is an apocalyptic number.

It is an amenable number.

2163404345 is a deficient number, since it is larger than the sum of its proper divisors (501402775).

2163404345 is a wasteful number, since it uses less digits than its factorization.

2163404345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70396.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 2163404345 is about 46512.4106556519. The cubic root of 2163404345 is about 1293.3395722692.

Adding to 2163404345 its reverse (5434043612), we get a palindrome (7597447957).

The spelling of 2163404345 in words is "two billion, one hundred sixty-three million, four hundred four thousand, three hundred forty-five".