2645241806 has 4 divisors (see below), whose sum is σ = 3967862712. Its totient is φ = 1322620902.

The previous prime is 2645241779. The next prime is 2645241821. The reversal of 2645241806 is 6081425462.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2645241806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661310450 + ... + 661310453.

It is an arithmetic number, because the mean of its divisors is an integer number (991965678).

Almost surely, 2^2645241806 is an apocalyptic number.

2645241806 is a deficient number, since it is larger than the sum of its proper divisors (1322620906).

2645241806 is a wasteful number, since it uses less digits than its factorization.

2645241806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322620905.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2645241806 is about 51431.9142750880. The cubic root of 2645241806 is about 1382.9987659596.

The spelling of 2645241806 in words is "two billion, six hundred forty-five million, two hundred forty-one thousand, eight hundred six".