2279787121 has 8 divisors (see below), whose sum is σ = 2358961920. Its totient is φ = 2200649808.

The previous prime is 2279787101. The next prime is 2279787127. The reversal of 2279787121 is 1217879722.

2279787121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2279787121 - 2¹¹ = 2279785073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2279787127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178470 + ... + 190816.

It is an arithmetic number, because the mean of its divisors is an integer number (294870240).

Almost surely, 2^2279787121 is an apocalyptic number.

It is an amenable number.

2279787121 is a deficient number, since it is larger than the sum of its proper divisors (79174799).

2279787121 is a wasteful number, since it uses less digits than its factorization.

2279787121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18743.

The product of its digits is 197568, while the sum is 46.

The square root of 2279787121 is about 47747.1163631899. The cubic root of 2279787121 is about 1316.1279090959.

The spelling of 2279787121 in words is "two billion, two hundred seventy-nine million, seven hundred eighty-seven thousand, one hundred twenty-one".