2354378805 has 20 divisors (see below), whose sum is σ = 4220442732. Its totient is φ = 1255668480.

The previous prime is 2354378771. The next prime is 2354378813. The reversal of 2354378805 is 5088734532.

2354378805 is a `hidden beast` number, since 23 + 543 + 7 + 8 + 80 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1803021444 + 551357361 = 42462^2 + 23481^2 .

It is not a de Polignac number, because 2354378805 - 2⁸ = 2354378549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2906236 + ... + 2907045.

Almost surely, 2^2354378805 is an apocalyptic number.

It is an amenable number.

2354378805 is a deficient number, since it is larger than the sum of its proper divisors (1866063927).

2354378805 is an equidigital number, since it uses as much as digits as its factorization.

2354378805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813298 (or 5813289 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 2354378805 is about 48521.9414801180. The cubic root of 2354378805 is about 1330.3281465545.

The spelling of 2354378805 in words is "two billion, three hundred fifty-four million, three hundred seventy-eight thousand, eight hundred five".