2642422645 has 4 divisors (see below), whose sum is σ = 3170907180. Its totient is φ = 2113938112.

The previous prime is 2642422631. The next prime is 2642422649. The reversal of 2642422645 is 5462242462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1541112049 + 1101310596 = 39257^2 + 33186^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642422645 - 2⁵ = 2642422613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642422649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264242260 + ... + 264242269.

It is an arithmetic number, because the mean of its divisors is an integer number (792726795).

Almost surely, 2^2642422645 is an apocalyptic number.

It is an amenable number.

2642422645 is a deficient number, since it is larger than the sum of its proper divisors (528484535).

2642422645 is an equidigital number, since it uses as much as digits as its factorization.

2642422645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528484534.

The product of its digits is 184320, while the sum is 37.

The square root of 2642422645 is about 51404.5002407377. The cubic root of 2642422645 is about 1382.5072819579.

The spelling of 2642422645 in words is "two billion, six hundred forty-two million, four hundred twenty-two thousand, six hundred forty-five".