2684195645 has 24 divisors (see below), whose sum is σ = 3410026200. Its totient is φ = 2028032640.

The previous prime is 2684195641. The next prime is 2684195669. The reversal of 2684195645 is 5465914862.

It can be written as a sum of positive squares in 4 ways, for example, as 1231518649 + 1452676996 = 35093^2 + 38114^2 .

It is not a de Polignac number, because 2684195645 - 2² = 2684195641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2684195593 and 2684195602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684195641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627815 + ... + 632075.

It is an arithmetic number, because the mean of its divisors is an integer number (142084425).

Almost surely, 2^2684195645 is an apocalyptic number.

It is an amenable number.

2684195645 is a deficient number, since it is larger than the sum of its proper divisors (725830555).

2684195645 is a wasteful number, since it uses less digits than its factorization.

2684195645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4653 (or 4634 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The square root of 2684195645 is about 51809.2235514102. The cubic root of 2684195645 is about 1389.7543939186.

The spelling of 2684195645 in words is "two billion, six hundred eighty-four million, one hundred ninety-five thousand, six hundred forty-five".