2281878771 has 12 divisors (see below), whose sum is σ = 3221957592. Its totient is φ = 1431553024.

The previous prime is 2281878769. The next prime is 2281878779. The reversal of 2281878771 is 1778781822.

It is not a de Polignac number, because 2281878771 - 2¹ = 2281878769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2281878779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337795 + ... + 344483.

It is an arithmetic number, because the mean of its divisors is an integer number (268496466).

Almost surely, 2^2281878771 is an apocalyptic number.

2281878771 is a deficient number, since it is larger than the sum of its proper divisors (940078821).

2281878771 is an frugal number, since it uses more digits than its factorization.

2281878771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398 (or 6709 counting only the distinct ones).

The product of its digits is 702464, while the sum is 51.

The square root of 2281878771 is about 47769.0147585231. The cubic root of 2281878771 is about 1316.5302913249.

Multiplying 2281878771 by its sum of digits (51), we get a square (116375817321 = 341139²).

2281878771 divided by its sum of digits (51) gives a square (44742721 = 6689²).

The spelling of 2281878771 in words is "two billion, two hundred eighty-one million, eight hundred seventy-eight thousand, seven hundred seventy-one".