2299649778 has 40 divisors (see below), whose sum is σ = 5201116272. Its totient is φ = 759380184.

The previous prime is 2299649773. The next prime is 2299649827. The reversal of 2299649778 is 8779469922.

2299649778 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2299649773) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49000 + ... + 83667.

Almost surely, 2^2299649778 is an apocalyptic number.

2299649778 is an abundant number, since it is smaller than the sum of its proper divisors (2901466494).

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

2299649778 is a wasteful number, since it uses less digits than its factorization.

2299649778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132788 (or 132779 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 2299649778 is about 47954.6637773637. The cubic root of 2299649778 is about 1319.9391190929.

The spelling of 2299649778 in words is "two billion, two hundred ninety-nine million, six hundred forty-nine thousand, seven hundred seventy-eight".