1922211819 has 24 divisors (see below), whose sum is σ = 3030489072. Its totient is φ = 1164381120.

The previous prime is 1922211803. The next prime is 1922211847. The reversal of 1922211819 is 9181122291.

It is not a de Polignac number, because 1922211819 - 2⁴ = 1922211803 is a prime.

It is a super-2 number, since 2×1922211819² = 7389796554206577522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1922211869) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 261397 + ... + 268649.

It is an arithmetic number, because the mean of its divisors is an integer number (126270378).

Almost surely, 2^1922211819 is an apocalyptic number.

1922211819 is a deficient number, since it is larger than the sum of its proper divisors (1108277253).

1922211819 is a wasteful number, since it uses less digits than its factorization.

1922211819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947 (or 9944 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 1922211819 is about 43843.0361517083. The cubic root of 1922211819 is about 1243.3700856117.

The spelling of 1922211819 in words is "one billion, nine hundred twenty-two million, two hundred eleven thousand, eight hundred nineteen".