2445677778 has 8 divisors (see below), whose sum is σ = 4891355568. Its totient is φ = 815225924.

The previous prime is 2445677737. The next prime is 2445677779. The reversal of 2445677778 is 8777765442.

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

2445677778 is an admirable number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2445677779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203806476 + ... + 203806487.

It is an arithmetic number, because the mean of its divisors is an integer number (611419446).

Almost surely, 2^2445677778 is an apocalyptic number.

2445677778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2445677778 is a wasteful number, since it uses less digits than its factorization.

2445677778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407612968.

The product of its digits is 18439680, while the sum is 57.

The square root of 2445677778 is about 49453.7943741428. The cubic root of 2445677778 is about 1347.3065231880.

The spelling of 2445677778 in words is "two billion, four hundred forty-five million, six hundred seventy-seven thousand, seven hundred seventy-eight".