2279261890 has 8 divisors (see below), whose sum is σ = 4102671420. Its totient is φ = 911704752.

The previous prime is 2279261861. The next prime is 2279261899. The reversal of 2279261890 is 981629722.

2279261890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2091873169 + 187388721 = 45737^2 + 13689^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2279261890.

It is not an unprimeable number, because it can be changed into a prime (2279261899) 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, 113963085 + ... + 113963104.

Almost surely, 2^2279261890 is an apocalyptic number.

2279261890 is a deficient number, since it is larger than the sum of its proper divisors (1823409530).

2279261890 is a wasteful number, since it uses less digits than its factorization.

2279261890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227926196.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2279261890 is about 47741.6159131632. The cubic root of 2279261890 is about 1316.0268288584.

The spelling of 2279261890 in words is "two billion, two hundred seventy-nine million, two hundred sixty-one thousand, eight hundred ninety".