1821422814 has 16 divisors (see below), whose sum is σ = 3653169552. Its totient is φ = 605420288.

The previous prime is 1821422747. The next prime is 1821422843. The reversal of 1821422814 is 4182241281.

1821422814 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427869 + ... + 432104.

It is an arithmetic number, because the mean of its divisors is an integer number (228323097).

Almost surely, 2^1821422814 is an apocalyptic number.

1821422814 is an abundant number, since it is smaller than the sum of its proper divisors (1831746738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1821422814 is a wasteful number, since it uses less digits than its factorization.

1821422814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860331.

The product of its digits is 8192, while the sum is 33.

The square root of 1821422814 is about 42678.1303948521. The cubic root of 1821422814 is about 1221.2472271462.

The spelling of 1821422814 in words is "one billion, eight hundred twenty-one million, four hundred twenty-two thousand, eight hundred fourteen".