1922821816 has 8 divisors (see below), whose sum is σ = 3605290920. Its totient is φ = 961410904.

The previous prime is 1922821807. The next prime is 1922821853. The reversal of 1922821816 is 6181282291.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120176356 + ... + 120176371.

It is an arithmetic number, because the mean of its divisors is an integer number (450661365).

Almost surely, 2^1922821816 is an apocalyptic number.

It is an amenable number.

1922821816 is a deficient number, since it is larger than the sum of its proper divisors (1682469104).

1922821816 is a wasteful number, since it uses less digits than its factorization.

1922821816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240352733 (or 240352729 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 1922821816 is about 43849.9922006835. The cubic root of 1922821816 is about 1243.5015958854.

The spelling of 1922821816 in words is "one billion, nine hundred twenty-two million, eight hundred twenty-one thousand, eight hundred sixteen".