1922772816 has 50 divisors (see below), whose sum is σ = 5565066122. Its totient is φ = 640923840.

The previous prime is 1922772779. The next prime is 1922772823. The reversal of 1922772816 is 6182772291.

It is a happy number.

1922772816 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1913187600 + 9585216 = 43740^2 + 3096^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 740515 + ... + 743106.

Almost surely, 2^1922772816 is an apocalyptic number.

1922772816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1922772816 is an abundant number, since it is smaller than the sum of its proper divisors (3642293306).

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

1922772816 is a wasteful number, since it uses less digits than its factorization.

1922772816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483641 (or 1483626 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 1922772816 is about 43849.4334741055. The cubic root of 1922772816 is about 1243.4910329209.

The spelling of 1922772816 in words is "one billion, nine hundred twenty-two million, seven hundred seventy-two thousand, eight hundred sixteen".