2278267228449 has 9 divisors (see below), whose sum is σ = 3290836981809. Its totient is φ = 1518841800180.

The previous prime is 2278267228441. The next prime is 2278267228469. The reversal of 2278267228449 is 9448227628722.

The square root of 2278267228449 is 1509393.

It is a perfect power (a square), and thus also a powerful number.

2278267228449 is a `hidden beast` number, since 2 + 27 + 82 + 6 + 72 + 28 + 449 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2278267228449 - 2³ = 2278267228441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2278267228441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4276614 + ... + 4779744.

Almost surely, 2^{2278267228449} is an apocalyptic number.

2278267228449 is the 1509393-rd square number.

2278267228449 is the 754697-th centered octagonal number.

It is an amenable number.

2278267228449 is a deficient number, since it is larger than the sum of its proper divisors (1012569753360).

2278267228449 is an frugal number, since it uses more digits than its factorization.

2278267228449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006268 (or 503134 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 63.

The spelling of 2278267228449 in words is "two trillion, two hundred seventy-eight billion, two hundred sixty-seven million, two hundred twenty-eight thousand, four hundred forty-nine".