2642564245 has 8 divisors (see below), whose sum is σ = 3280424760. Its totient is φ = 2041152960.

The previous prime is 2642564227. The next prime is 2642564293. The reversal of 2642564245 is 5424652462.

It can be written as a sum of positive squares in 4 ways, for example, as 205463556 + 2437100689 = 14334^2 + 49367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2642564245 - 2⁷ = 2642564117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2642564198 and 2642564207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9112146 + ... + 9112435.

It is an arithmetic number, because the mean of its divisors is an integer number (410053095).

Almost surely, 2^2642564245 is an apocalyptic number.

It is an amenable number.

2642564245 is a deficient number, since it is larger than the sum of its proper divisors (637860515).

2642564245 is a wasteful number, since it uses less digits than its factorization.

2642564245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18224615.

The product of its digits is 460800, while the sum is 40.

The square root of 2642564245 is about 51405.8775336050. The cubic root of 2642564245 is about 1382.5319764095.

The spelling of 2642564245 in words is "two billion, six hundred forty-two million, five hundred sixty-four thousand, two hundred forty-five".