2279745287 has 4 divisors (see below), whose sum is σ = 2279896896. Its totient is φ = 2279593680.

The previous prime is 2279745277. The next prime is 2279745311. The reversal of 2279745287 is 7825479722.

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

It is a cyclic number.

It is not a de Polignac number, because 2279745287 - 2¹⁰ = 2279744263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2279745227) 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, 50414 + ... + 84267.

It is an arithmetic number, because the mean of its divisors is an integer number (569974224).

Almost surely, 2^2279745287 is an apocalyptic number.

2279745287 is a deficient number, since it is larger than the sum of its proper divisors (151609).

2279745287 is a wasteful number, since it uses less digits than its factorization.

2279745287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151608.

The product of its digits is 3951360, while the sum is 53.

The square root of 2279745287 is about 47746.6782823685. The cubic root of 2279745287 is about 1316.1198587490.

The spelling of 2279745287 in words is "two billion, two hundred seventy-nine million, seven hundred forty-five thousand, two hundred eighty-seven".