1922531328 has 256 divisors, whose sum is σ = 5945335200. Its totient is φ = 613416960.

The previous prime is 1922531323. The next prime is 1922531329. The reversal of 1922531328 is 8231352291.

1922531328 is a `hidden beast` number, since 1 + 92 + 2 + 531 + 32 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (256).

It is a super-2 number, since 2×1922531328² = 7392253414282887168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1922531292 and 1922531301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922531323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36274150 + ... + 36274202.

Almost surely, 2^1922531328 is an apocalyptic number.

1922531328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1922531328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2972667600).

1922531328 is an abundant number, since it is smaller than the sum of its proper divisors (4022803872).

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

1922531328 is an frugal number, since it uses more digits than its factorization.

1922531328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 99 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1922531328 is about 43846.6797830805. The cubic root of 1922531328 is about 1243.4389725609.

The spelling of 1922531328 in words is "one billion, nine hundred twenty-two million, five hundred thirty-one thousand, three hundred twenty-eight".